1.

The atomic mass of this atom is 7 . State the number of neutrons in this atom.

Answer»

ANSWER:

Mass number (A) is the sum of the number of protons and NEUTRONS present in the nucleus.

A=n+p

P=A−n=13−7=6

No. of protons =no.of electrons = atomic number

The atomic number of the atom is 6.

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