Question

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Answer 1

Answer: Here's your answer!!

Explanation:

The number of electrons in Z^(3-) is 10.The negative sign indicates that it has 3 extra or more electrons than neutral atom. So, the number of electrons in neutral atom=10-3

=7

Also we know that no. of electrons in neutral atom=Atomic no. of atom

Atomic no. of atom=7.

(It would be nitrogen atom!!)

Answer 2

Answer: 7

If the number of electrons in an ion Z^3- is 10, the atomic number of elements Z will be 7 because the ion is formed by gaining three elements.