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Standard XII

Chemistry

Groups

Atomic number...

Question

Atomic number of a nucleus is $Z$ and atomic mass is $M$ . The number of neutrons is :

M - Z

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M

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Z

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M + Z

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Solution

The correct option is A $M - Z$
$N = M - Z = A t o m i c m a s s - T o t a l n o . o f p r o t o n s$ .

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Similar questions

Q. Atomic number of a nucleus is

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and atomic mass is

M

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M^{2 +}

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S O_{2}

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(Z + 2)

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Show that the minimum energy needed to separate a proton from a nucleus with Z protons and N neutrons is $△ E = (M_{z - 1, N} + M_{H} - M_{Z, n}) C^{2}$ Where $M_{Z, n}$ = mass of an atom with Z protons and N neutrons in the nucleus and $M_{H}$ = mass of a hydrogen atom. This energy is known as proton-separation energy.

Q. Write the relation for binding energy (B.E) (in MeV) of a nucleus of mass

_{Z}^{A} M

, atomic number (Z) and mass number (A) in terms of the masses of its constituents - neutrons and protons.

Q. If A = Atomic mass, Z = Atomic number, then number of neutrons is equal to:

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Atomic number of a nucleus is Z and atomic mass is M. The number of neutrons is :

The correct option is A M−ZN=M−Z=Atomic mass−Total no. ofprotons.

Atomic number of a nucleus is $Z$ and atomic mass is $M$ . The number of neutrons is :

The correct option is A $M - Z$
$N = M - Z = A t o m i c m a s s - T o t a l n o . o f p r o t o n s$ .