Atomic mass of an element is not necessa...

Atomic mass of an element is not necessarily a whole number because :

A

It contains electrons, protons and neutrons

B

It contains allotropic forms

C

Atoms are no longer considered indivisible

D

It contains isotopes

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The atomic number of an element is 35. What is the total number of electrons present in all the p -orbitals of the ground state atom of that element

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B

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C

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D

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A

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B

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The atomic number of an element is 17 and its mass number is 37. The number of protons, electrons and neutrons present in the neutral atom are :

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