All isotopes of the same element have ______ (1) different atomic numbers and different atomic mass (2) different atomic numbers and the same atomic mass (3) the same atomic number but different atomic masses (4) the same atomic number and the atomic mass

All isotopes of the same element have ______ (1) different atomic numbers and different atomic mass (2) different atomic numbers and the same atomic mass (3) the same atomic number but different atomic masses (4) the same atomic number and the atomic mass
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 the same atomic number but different atomic masses
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All isotopes of the same element have (1) different atomic numbers and different atomic mass (2) different atomic numbers and the same atomic mass (3) the same atomic number but different atomic masses (4) the same atomic number and the atomic mass

Description : All isotopes of the same element have (1) different atomic numbers and different atomic mass (2) different atomic numbers and the same atomic mass (3) the same atomic number but different atomic masses (4) the same atomic number and the atomic mass

Last Answer : (3) the same atomic number but different atomic masses Explanation: Isotopes are forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei. So they have the same atomic number, but differ in relative atomic mass.

Consider the isotopes of carbon, C-12 and C-14. Would you place them in different slots because their atomic masses are different or would you place them in the same position because their chemical properties are the same?

Description : Consider the isotopes of carbon, C-12 and C-14. Would you place them in different slots because their atomic masses are different or would you place them in the same position because their chemical properties are the same?

Last Answer : Isotopes are not placed according to their atomic mass but they are all placed in the same position as they have the same atomic number.

Atoms of same element having different mass numbers are Called _______. (1) Isobars (2) Isotopes (3) (3)Isotones (4) (4) Isomers

Description : Atoms of same element having different mass numbers are Called _______. (1) Isobars (2) Isotopes (3) (3)Isotones (4) (4) Isomers

Last Answer : (2) Isotopes Explanation: Atoms that have the same atomic number but different atomic masses are called isotopes. The difference in mass arises due to the atoms containing a different number of neutrons ... -14 are three isotopes of the element carbon with mass numbers 12, 13 and 14 respectively.

Atoms of same element having different mass numbers are called__________ (1) Isobars (2) Isotopes (3) Isotones (4) Isomers

Description : Atoms of same element having different mass numbers are called__________ (1) Isobars (2) Isotopes (3) Isotones (4) Isomers

Last Answer : Isotopes

Which one is different for the neutral atoms of the isotopes of an element? (A) Atomic weights (B) Atomic numbers (C) Number of protons (D) Number of electrons

Description : Which one is different for the neutral atoms of the isotopes of an element? (A) Atomic weights (B) Atomic numbers (C) Number of protons (D) Number of electrons

Last Answer : (A) Atomic weights

Which one is different for the neutral atoms of the isotopes of an element? (A) Atomic weights (B) Atomic numbers (C) Number of protons (D) Number of electrons

Description : Which one is different for the neutral atoms of the isotopes of an element? (A) Atomic weights (B) Atomic numbers (C) Number of protons (D) Number of electrons

Last Answer : (A) Atomic weights

Isotopes of an element have the same (A) Number of neutrons (B) Mass number (C) Electronic configuration (D) Atomic weight

Description : Isotopes of an element have the same (A) Number of neutrons (B) Mass number (C) Electronic configuration (D) Atomic weight

Last Answer : (C) Electronic configuration

How do the decimal places on the atomic masses of elements realate to isotopes?

Description : How do the decimal places on the atomic masses of elements realate to isotopes?

Last Answer : The Atomic Mass of an element is the weighted average of massesof the isotopes of the element, weighted in proportion to theirabundance.

How do the decimal places on the atomic masses of elements realate to isotopes?

Description : How do the decimal places on the atomic masses of elements realate to isotopes?

Last Answer : The Atomic Mass of an element is the weighted average of massesof the isotopes of the element, weighted in proportion to theirabundance.

Isotopes of an element (a) Are physically identical to each other (b) Are chemically identical to each other (c) Are not identical to each other (d) Have the same mass numbers

Description : Isotopes of an element (a) Are physically identical to each other (b) Are chemically identical to each other (c) Are not identical to each other (d) Have the same mass numbers

Last Answer : Ans:(b)

The atomic mass of an element is fractional, because (A) Of uncertainty principle (B) It may have isobars (C) It contains neutrons (D) It may have isotopes

Description : The atomic mass of an element is fractional, because (A) Of uncertainty principle (B) It may have isobars (C) It contains neutrons (D) It may have isotopes

Last Answer : (D) It may have isotopes

The mass spectrograph directly yields a value for which one of the following? w) mass of a photon x) mass of a neutron y) masses of isotopes of elements z) mass to charge ratio of ions

Description : The mass spectrograph directly yields a value for which one of the following? w) mass of a photon x) mass of a neutron y) masses of isotopes of elements z) mass to charge ratio of ions

Last Answer : ANSWER: Z -- MASS TO CHARGE RATIO OF IONS

The atomic masses of three elements X, Y and Z having similar chemical properties are 7, 23 and 39 respectively. a) Calculate the average atomic mass of elements X and Z. b) How is the average atomic mass of elements X and Z compare with the atomic mass of element Y? c) Which law of classification of elements is illustrated by this example? d) Give another example of a set of elements which are classified according to this law.

Description : The atomic masses of three elements X, Y and Z having similar chemical properties are 7, 23 and 39 respectively. a) Calculate the average atomic mass of elements X and Z. b) How is the ... this example? d) Give another example of a set of elements which are classified according to this law.

Last Answer : a) The average atomic mass of X and Z = 7 39 2 46 2 23 b) The average atomic mass of X and Z is equal to the atomic mass of Y c) The law illustrated in this example is Dobereiner’s law of triads. d) Another example of Dobereiner’s law is Calcium, Strontium and Barium.

In a triad A, B and C, the atomic masses of A and B are 80 and 120 respectively. What is the atomic mass of element C?

Description : In a triad A, B and C, the atomic masses of A and B are 80 and 120 respectively. What is the atomic mass of element C?

Last Answer : Atomic mass of A=80 Atomic mass of B=120 A C 2 Atomic mass of B = 80 C 2 120x2 80 C 120 240 C 80 C 240 80 C 160

Atoms of the same element that have different numbers of neutrons are called _______ a. isotopes b. ions c. isomers d. inert elements

Description : Atoms of the same element that have different numbers of neutrons are called _______ a. isotopes b. ions c. isomers d. inert elements

Last Answer : a. isotopes

What is the number of atoms constituting a molecule known as - (1) Atomic number (2) Isotopes (3) Atomic mass (4) Atomicity

Description : What is the number of atoms constituting a molecule known as - (1) Atomic number (2) Isotopes (3) Atomic mass (4) Atomicity

Last Answer : (4) Atomicity Explanation: Atomicity is the total number of atoms present in one molecule of an element.

Nuclides having the same atomic numbers are termed as (A) Isotopes (B) Isomers (C) Isotones (D) Isobars

Description : Nuclides having the same atomic numbers are termed as (A) Isotopes (B) Isomers (C) Isotones (D) Isobars

Last Answer : (B) Isomers

The correct statement is (a) Two Isotones always have the same atomic number (b) Two isotopes always have the same mass number (c) Two isobars always have the same atomic number (d) Two isobars always have the same mass number

Description : The correct statement is (a) Two Isotones always have the same atomic number (b) Two isotopes always have the same mass number (c) Two isobars always have the same atomic number (d) Two isobars always have the same mass number

Last Answer : Ans:(d)

When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as (A) Isomers (B) Isotopes (C) Isobars (D) Isotones

Description : When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as (A) Isomers (B) Isotopes (C) Isobars (D) Isotones

Last Answer : (D) Isotones

Heavy metals got their name because compared to other atoms they have - (1) Higher densities (2) Higher atomic masses (3) Higher atomic numbers (4) Higher atomic radii

Description : Heavy metals got their name because compared to other atoms they have - (1) Higher densities (2) Higher atomic masses (3) Higher atomic numbers (4) Higher atomic radii

Last Answer : (2) Higher atomic masses Explanation: Arsenic, beryllium, cadmium, chromium, lead, manganese, mercury, nickel, and selenium are some of the metals called 'heavy' because of their high relative atomic ... and can cause damage or death in animals, humans, and plants even at very low concentrations.

Heavy metals got their name because compared to other atoms they have (1) Higher densities (2) Higher atomic masses (3) Higher atomic numbers (4) Higher atomic radii

Description : Heavy metals got their name because compared to other atoms they have (1) Higher densities (2) Higher atomic masses (3) Higher atomic numbers (4) Higher atomic radii

Last Answer : Higher atomic masses

Isotopes of an element have different numbers of: w) electrons x) protons y) neutrons z) leptons

Description : Isotopes of an element have different numbers of: w) electrons x) protons y) neutrons z) leptons

Last Answer : ANSWER: Y -- NEUTRONS

Isotopes of an element have different (A) Mass number (B) Electronic configuration (C) Nuclear charge (D) Chemical properties

Description : Isotopes of an element have different (A) Mass number (B) Electronic configuration (C) Nuclear charge (D) Chemical properties

Last Answer : (A) Mass number

Isotopes of an element have different (A) Mass number (B) Electronic configuration (C) Nuclear charge (D) Chemical properties

Description : Isotopes of an element have different (A) Mass number (B) Electronic configuration (C) Nuclear charge (D) Chemical properties

Last Answer : (A) Mass number

There are two elements calcium (atomic number 20) and argon (atomic number 18) The mass number of both the elements is 40. They are therefore known as (a) isotones (b) isochores (c) isobars (d) isotopes

Description : There are two elements calcium (atomic number 20) and argon (atomic number 18) The mass number of both the elements is 40. They are therefore known as (a) isotones (b) isochores (c) isobars (d) isotopes

Last Answer : Ans:(c)

In 1866, John Newlands, an English scientist, arranged the then known elements in the order of increasing atomic masses. He found that every eighth element had properties similar to that of the first. He called it the - (1) Law of Pentamates (2) Law of musical notes (3) Law of Octaves (4) None of the above

Description : In 1866, John Newlands, an English scientist, arranged the then known elements in the order of increasing atomic masses. He found that every eighth element had properties similar to that of the first. He called it ... of Pentamates (2) Law of musical notes (3) Law of Octaves (4) None of the above

Last Answer : (3) Law of Octaves Explanation: Newlands compared his discovery to the octaves found in music and thus, he called it the ‘Law of Octaves’. It is also known as ‘Newlands’ Law of Octaves’.

The sum of the mass numbers of the atoms in a molecule equals the ______, which is measured in units called _______. a. Atomic Number; Milligrams b. Mass Weight; Micrograms c. Chemical Weight; Moles d. Molecular Weight; Daltons

Description : The sum of the mass numbers of the atoms in a molecule equals the ______, which is measured in units called _______. a. Atomic Number; Milligrams b. Mass Weight; Micrograms c. Chemical Weight; Moles d. Molecular Weight; Daltons

Last Answer : d. Molecular Weight; Daltons

__________ have the same mass number, but different nuclear charge. (A) Isotopes(B) Isobars(C) Isotones(D) None of these

Description : __________ have the same mass number, but different nuclear charge. (A) Isotopes (B) Isobars (C) Isotones (D) None of these

Last Answer : (B) Isobars

Isotopes of Carbon have the same number of neutrons and different numbers of protons?

Description : Isotopes of Carbon have the same number of neutrons and different numbers of protons?

Last Answer : Same number of protons, different numbers of neutrons.

Lithium, sodium and potassium form a Dobereiner’s triad. The atomic masses of lithium and potassium are 7 and 39 respectively. Predict the atomic mass of sodium. -Science

Description : Lithium, sodium and potassium form a Dobereiner’s triad. The atomic masses of lithium and potassium are 7 and 39 respectively. Predict the atomic mass of sodium. -Science

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Atoms with varying mass numbers are called ________. a. Electrons b. Ions c. Isotopes d. Neutrons

Description : Atoms with varying mass numbers are called ________. a. Electrons b. Ions c. Isotopes d. Neutrons

Last Answer : c. Isotopes

Do different isotopes of the same element bond differently?

Description : Do different isotopes of the same element bond differently?

Last Answer : answer:So, at the most basic level, the main difference is the energies of the bonds themselves, especially the vibrational energies. Since isotopes are either slightly larger or smaller than the ... for heavier atoms, though you naturally need better and better equipment to tell the difference.

In the mass spectrograph, two positively charged ions having the same velocity pass through a slit and enter a uniform magnetic field at right angles to their initial velocities. The ions will NOT be separated if: w) they have the same masses but different charges x) they have the same charges but different masses y) the products of their charges and their masses are equal z) the ratios of their charges to their masses are equal

Description : In the mass spectrograph, two positively charged ions having the same velocity pass through a slit and enter a uniform magnetic field at right angles to their initial velocities. The ions will NOT be ... charges and their masses are equal z) the ratios of their charges to their masses are equal  

Last Answer : ANSWER: Z -- THE RATIOS OF THEIR CHARGES TO THEIR MASSES ARE EQUAL 

Atoms of the same element having same atomic number and different mass number are known as?

Description : Atoms of the same element having same atomic number and different mass number are known as?

Last Answer : Isotopes

Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions .

Description : Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions .

Last Answer : (1) Isotopes Explanation: Atoms that have the same number of protons but different numbers of neutrons are called isotopes. For example, carbon-12, carbon13 and carbon-14 are three isotopes of the element ... has 6 protons, so that the neutron numbers of these isotopes are 6, 7 and 8 respectively.

Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions

Description : Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions

Last Answer : Isotopes

The difference between isotopes of an element is due to the presence of a different number of (a) Protons (b) Neutrons (c) Electrons (d) Photons

Description : The difference between isotopes of an element is due to the presence of a different number of (a) Protons (b) Neutrons (c) Electrons (d) Photons

Last Answer : Ans:(b)

All atoms with the same number of ______ in the atomic nucleus are the same element?

Description : All atoms with the same number of ______ in the atomic nucleus are the same element?

Last Answer : progdk

Isotopes of the same element differ in their number of _____.?

Description : Isotopes of the same element differ in their number of _____.?

Last Answer : neutrons

Isotopes of the same element differ in their number of _____.?

Description : Isotopes of the same element differ in their number of _____.?

Last Answer : neutrons

Isotopes of the same element differ in the number of (a) Protons (b) Neutrons (c) Electrons (d) Positrons

Description : Isotopes of the same element differ in the number of (a) Protons (b) Neutrons (c) Electrons (d) Positrons

Last Answer : Ans:(a)

What are isobars? (1) Elements with same atomic number but different mass number (2) Elements with different atomic number but same mass number (3) Elements with different atomic number and different mass number (4) Elements with same atomic number and same mass number

Description : What are isobars? (1) Elements with same atomic number but different mass number (2) Elements with different atomic number but same mass number (3) Elements with different atomic number and different mass number (4) Elements with same atomic number and same mass number

Last Answer : (2) Elements with different atomic number but same mass number Explanation: Isobars are atoms of different chemical elements that have the same number of n cleons. Correspondingly, isobars differ in atomic number (number of protons) but have the same mass number.

Two hydrogen-like atoms `A` and `B` are of different masses and each atom contains equal numbers of protons and neutrons. The difference in the energi

Description : Two hydrogen-like atoms `A` and `B` are of different masses and each atom contains equal numbers of protons and neutrons. The difference in the energi

Last Answer : Two hydrogen-like atoms `A` and `B` are of different masses and each atom contains equal numbers of ... A` imparts. Identify the atom `A and B`.

An atom of an element with mass number 23 and atomic number 11 will have- (1) 11 neutrons, 12 protons and 11 electrons (2) 11 protons, 12 neutrons and 11 electrons (3) 11 protons, 12 electrons and 11 neutrons (4) 23 protons and 11 electrons

Description : An atom of an element with mass number 23 and atomic number 11 will have- (1) 11 neutrons, 12 protons and 11 electrons (2) 11 protons, 12 neutrons and 11 electrons (3) 11 protons, 12 electrons and 11 neutrons (4) 23 protons and 11 electrons

Last Answer : (2) 11 protons, 12 neutrons and 11 electrons

An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is– (1) 17 (2) 19 (3) 36 (4) 53

Description : An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is– (1) 17 (2) 19 (3) 36 (4) 53

Last Answer : (2) 19 Explanation: Mass Number = number of protons (atomic number) + nu.sriber of neutrons. So as per the question, 36= number of neutrons + 17. Number of neutrons= 36 -17= 19

The umber of neutrons present in an element having mass number 226 and atomic number 88 is– (1) 88 (2) 138 (3) 314 (4) 50

Description : The umber of neutrons present in an element having mass number 226 and atomic number 88 is– (1) 88 (2) 138 (3) 314 (4) 50

Last Answer : (2) 138 Explanation: The mass number is a count of the number of particles in an atom's nucleus which is made up of protons and neutrons. In other words, Mass Number = Number of Protons + Number of Neutrons. ... of an element, 226 = 88 + number of Neutrons. So, the number of neutrons= 226 - 88= 138.

An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is (1) 17 (2) 19 (3) 36 (4) 53

Description : An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is (1) 17 (2) 19 (3) 36 (4) 53

Last Answer : 19

The number of neutrons present in an element having mass number 226 and atomic number 88 is : (1) 88 (2) 138 (3) 314 (4) 50

Description : The number of neutrons present in an element having mass number 226 and atomic number 88 is : (1) 88 (2) 138 (3) 314 (4) 50

Last Answer : 138

Chemical properties of isotopes – (1) must be same (2) must be different (3) need not be same (4) need not be different

Description : Chemical properties of isotopes – (1) must be same (2) must be different (3) need not be same (4) need not be different

Last Answer : (1) must be same Explanation: Isotopes of an element have similar chemical properties as they have the same number of electrons as an atom of that element. The electron arrangement is the same owing to same chemical properties. However, they have different numbers of neutrons, which

Chemical properties of isotopes (1) must be same (2) must be different (3) need not be same (4) need not be different

Description : Chemical properties of isotopes (1) must be same (2) must be different (3) need not be same (4) need not be different

Last Answer : must be same