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)

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)
by

1 Answer

Answer :

(D) Neutrons plus protons (i.e., nucleons)
by

Related questions

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What particles move around the nucleus of an atom and are negatively charged? (1) Electrons (2) Protons (3) Positrons (4) Neutrons

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The nucleus of an atom consists of - (1) electrons and neutrons (2) electrons and protons (3) protons and neutrons (4) All of the above

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These positively charged particles are found in the atomic nucleus. a. Protons only b. Electrons only c. Protons and neutrons d. Neutrons only

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What particles move around the nucleus of an atom and are negatively charged? (1) Electrons (2) Protons (3) Positrons (4) Neutrons

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Pick out the wrong statement. (A) Atoms with same number of nucleons but different number of protons are called isobars (B) Atoms with same number of protons but different number of nucleons are called isoters (C) Out of α, β, and γ-rays, the one having maximum penetration power are γ-rays (D) The product formed by emission of α-particle has mass number less by 4 units than the parent nuclide

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The nuclear particles that are assumed to hold nucleons together are (a) Electrons (b) Positrons (c) Neutrons (d) Mesons

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The nuclear particles which are assumed to hold the nucleons together are - (1) positrons (2) neutrons (3) electrons (4) mesons

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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

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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

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

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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

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Atomic number of an element gives (a) The number of protons in its atom (b) The number of nucleons in its atom (c) The weight of the atom of the element (d) The total number of elementary particles in its atom

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Last Answer : Ans:(a)

How many protons and neutrons are in the nucleus of isotope with mass of 68.926?

Description : How many protons and neutrons are in the nucleus of isotope with mass of 68.926?

Last Answer : p,n =31,38P=31 (from Periodic Table)N= 68.926-31=37.926

The binding energy of a nucleus is defined as one of the following. Is this definition: w) the energy equivalent to its mass x) the mass difference between its neutrons and protons y) the energy needed to remove a neutron from the nucleus z) the difference between the mass of the nucleus and the sum of the masses of its protons and neutrons

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Last Answer : ANSWER: Z -- THE DIFFERENCE BETWEEN THE MASS OF THE NUCLEUS AND THE UM 

What element has 1 protons 1 neutrons and 2 electrons?

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Last Answer : It is hydrogen element. It is tritium isotope of hydrogen.

How many protons neutrons and electrons are in the element manganese?

Description : How many protons neutrons and electrons are in the element manganese?

Last Answer : Manganese has 25 protons, 25 electrons and 30 neutrons.

What atom has 15 protons 17 neutrons and 15 electrons. What element is this atom?

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Last Answer : Need answer

What element has 9 protons 9 neutrons and 8 electrons?

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Last Answer : 8 17 This isotope of oxygen has 8 protons (atomic number), 8 electrons and 9 neutrons. (Recallthat mass number is the total of protons and neutrons. )

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

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The neutrons in an atom: w) are part of the nuclear charge x) rotate about the nucleus in elliptical orbits y) vary in number with different isotopes z) are always equal in number to the total number of protons

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Last Answer : ANSWER: Y -- VARY IN NUMBER WITH DIFFERENT ISOTOPES 

If the sodium atom contains 11 electrons 11 protons and 12 neutrons what is the mass number of sodium?

Description : If the sodium atom contains 11 electrons 11 protons and 12 neutrons what is the mass number of sodium?

Last Answer : Feel Free to Answer

If you have 3 protons 2 neutrons and 3 electrons then the mass number is?

Description : If you have 3 protons 2 neutrons and 3 electrons then the mass number is?

Last Answer : The mass number is 5. The mass number is the sum of protons and neutrons in an atomic nucleus. This represents the isotope lithium-5, which actually does not exist. The two isotopes of lithium are lithium-6 (5%) and lithium-7 (95%).

An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is?

Description : An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is?

Last Answer : Mass number = proton number + neutron number SO, Mass number(Aluminium) = 13+ 14 =27

An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is?

Description : An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is?

Last Answer : Mass number = proton number + neutron number SO, Mass number(Aluminium) = 13+ 14 =27

The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is (A) 1 (B) 0.5 (C) 2 (D) 4

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Last Answer : (A) 1

Participation of __________ is involved in the occurrence of a chemical reaction. (A) Protons (B) Neutrons (C) Electrons (D) None of these

Description : Participation of __________ is involved in the occurrence of a chemical reaction. (A) Protons (B) Neutrons (C) Electrons (D) None of these

Last Answer : (C) Electrons

It is known that an atom contains protons, neutrons and almost electrons. If the mass of neutron is assumed to half of its original value where as tha

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Chlorine atom and chloride ions - (1) Have an equal number of protons (2) Have an equal number of electrons (3) Unequal number neutrons (4) reacts spontaneously with water

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Last Answer : (1) Have an equal number of protons

Atomic number is equal to - (1) Number of electrons (2) Number of neutron (3) Number of protons (4) Total number of protons and neutrons

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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.

Pick out the wrong statement. (A) The disintegration rate of a radioactive substance cannot be increased by heating it (B) Electrons have negligible mass and unit negative change (C) Deuterium atom has one proton and two neutrons in its nucleus (D) Cadmium is capable of absorbing neutrons

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Last Answer : (C) Deuterium atom has one proton and two neutrons in its nucleus

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.?

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.