Description : For an element , if atomic number (Z) and mass number (A) are 29 and 63 respectively . Then the number of protons , neutrons and electrons respectivel
Last Answer : For an element , if atomic number (Z) and mass number (A) are 29 and 63 respectively . Then the number of protons ... C. 29 , 34 ,29 D. 29 , 29 , 29
Description : Why is the atomic mass of an element is usually not given as a whole number even though each individual atom of the element has a whole number of protons and neutrons.?
Last Answer : It's the electrons that throw it off.
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
Description : The atomic number of an element is equal to the number of __________ present in its atom. (A) Neutrons (B) Electrons (C) Protons (D) Either (B) or (C)
Last Answer : (D) Either (B) or (C)
Description : (A) During `beta`-decay, a new element with atomic number greater than one is obtained. (R ) Protons and neutrons keep on changing into one another th
Last Answer : (A) During `beta`-decay, a new element with atomic number greater than one is obtained. (R ) Protons and ... D. If both (A) and (R ) are incorrect.
Description : The mass number of an element is equal to the number of __________ in the nucleus. (A) Electrons (B) Neutrons (C) Protons (D) Neutrons plus protons (i.e., nucleons)
Last Answer : (D) Neutrons plus protons (i.e., nucleons)
Description : What is the atomic way of an element whose Adam's contain a protons 8 elecktronicks and 8 neutrons?
Last Answer : An oxygen atom contains 8 protons and 8 neutrons in its center,and 8 electrons in various levels outside its center.
Description : The mass number of a nucleus is (a) Always less than its atomic number (b) The sum of the number of protons and neutrons present in the nucleus (c) Always more than the atomic weight (d) A fraction
Last Answer : Ans:(b)
Description : The mass number of a nucleus is - (1) always less than its atomic number (2) the sum of the number of protons and neutrons present in the nucleus (3) always more than the atomic weight (4) a fraction
Last Answer : (2) the sum of the number of protons and neutrons present in the nucleus
Description : An element having large number of __________ is most easily subjected to nuclear fission. (A) Protons (B) Electrons (C) Neutrons (D) Nucleons
Last Answer : (D) Nucleons
Description : In an atomic explosion enormous energy is released which is due to the - (1) Conversions of neutrons into protons (2) Conversion of chemical energy into nuclear energy (3) Conversion of mechanical energy into nuclear energy (4) Conversion of mass into energy
Last Answer : (4) Conversion of mass into energy
Description : The enormous amount of energy released in an explosion of an atomic bomb is due to the - (1) conversion of mass into energy (2) conversion of chemical energy into heat energy (3) conversion of mechnical energy into nuclear energy (4) conversion of neutrons into protons
Last Answer : (4) conversion of neutrons into protons Explanation: The enormous amount of energy released in an explosion of an atomic bomb is due to the converson of neutrons into protons. When, a neutron strikes ... , each of which is a nucleus with about half the protons and neutrons of the original nucleus.
Description : The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element? (A) A + Z (B) A - Z (C) A (D) Z
Last Answer : (B) A - Z
Description : If an atom has 11 protons 12 neutrons and 11 electrons what is the identify of the element and it's mass number?
Last Answer : The mass number is 23; the element is sodium (Na-23).
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.
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
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
Description : Statement: Nuclide `._(13)^(30)Al` is less stable than `._(20)^(40) Ca` Explanation: Nuclides having odd number of protons and neutrons are general un
Last Answer : Statement: Nuclide `._(13)^(30)Al` is less stable than `._(20)^(40) Ca` Explanation: Nuclides having odd ... . D. If both (A) and (R ) are incorrect.
Description : What is the mass of an element with 15 protons, 13 electrons, and 11 neutrons?
Last Answer : oh actually i know the answer
Description : Which nuclides having the same number of neutrons but different number of protons or mass number? -Do You Know?
Last Answer : answer:
Description : Which nuclides having the same number of neutrons but different number of protons or mass number?
Last Answer : Isotones
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
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
Description : What are the number of protons plus the number of neutrons gives the atomic?
Last Answer : Need answer
Description : Choose the incorrect statement from the following: (a) The nuclear becomes weak if the nucleus contains too many protons compared to the number of neutrons (b) The nuclear force becomes weak if the ... (d) The nuclear force becomes very strong if the nucleus contains a large number of nucleons.
Last Answer : Ans:(d)
Description : Atomic number of an atom gives the number of which of the following? (1) electrons (2) protons (3) neutrons (4) neutrons and protons
Last Answer : (2) protons Explanation: Atomic number of a chemical element is the number of protons found in the nucleus of an atom of that element, and therefore identical to the charge number of the nucleus. ... periodic table. In an uncharged atom, the atomic number is also equal to the number of electrons.
Description : Atomic number is equal to - (1) Number of electrons (2) Number of neutron (3) Number of protons (4) Total number of protons and neutrons
Last Answer : (3) Number of protons Explanation: Atomic number is equal to Number of protons. The atomic number or proton number of a chemical element is the number of protons found in the nucleus of an atom.
Last Answer : (2) protons Explanation: The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of an atom.
Description : Atomic weight of an atom is (A) sum of the number of protons and neutrons. (B) sum of the number of protons and electrons. (C) sum of the number of electrons and neutrons. (D) sum of the number of electrons, protons and neutrons.
Last Answer : (A) sum of the number of protons and neutrons.
Description : Atomic number of an atom gives the number of which of the following ? (1) electrons (2) protons (3) neutrons (4) neutrons and protons
Last Answer : protons
Description : If permissible working stresses in steel and concrete are respectively 1400 kg/cm2 and 80 kg/cm2 and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is (A) 37 cm (B) 38 cm (C) 39 cm (D) 40 cm
Last Answer : Answer: Option D
Description : How many neutrons does element x have if its atomic number is 22 and its mass number is 84?
Description : If an atomic number of an element is 6 and its mass is 14 how many neutrons are contained in the nucleus?
Last Answer : jjjj
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
Description : An Element Atomic number 17 and mass number 36, then number of neutrons present in it–
Last Answer : 19
Description : An Element Atomic number 17 and mass number 36, then number of neutrons present in it
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
Description : In an atomic nucleus, by which force are neutrons and protons held together? -Do You Know?
Description : In an atomic nucleus, by which force are neutrons and protons held together?
Last Answer : – Exchange forces
Last Answer : Exchange forces
Description : These positively charged particles are found in the atomic nucleus. a. Protons only b. Electrons only c. Protons and neutrons d. Neutrons only
Last Answer : a. Protons only
Description : an atomic nucleus, by which force are neutrons and protons held together?
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.
Description : Pick out the wrong statement. (A) Isotopes have the same number of protons & electrons, but different number of neutrons (B) Hydrogen has two isotopes (C) In ordinary hydrogen, 1H1 and 1H2 are present in the ratio 6400:1 (D) None of these
Last Answer : (B) Hydrogen has two isotopes
Description : Isotopes of the same element differ in the number of (a) Protons (b) Neutrons (c) Electrons (d) Positrons
Last Answer : Ans:(a)
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
Description : Two atoms of the same element will have the same number of protons. If they have a different number of neutrons, what are they called?
Last Answer : ANSWER: ISOTOPES
Description : What element has 1 protons 1 neutrons and 2 electrons?
Last Answer : It is hydrogen element. It is tritium isotope of hydrogen.
Description : How many protons neutrons and electrons are in the element manganese?
Last Answer : Manganese has 25 protons, 25 electrons and 30 neutrons.