Question

Write the correct representation of an element x which consists of 15 electron and 16 neutron?

Answer 1

15 electrons means
its electronic configuration = 2,8,5
so x is a non metal called = phosphorus

Answer 2

Given that:

Number of electron is 15 and the number of neutron is 16.

To find:

The correct representation of an element X.

Solution,

We know that, number of electrons is equal to the number of protons. So, the number of protons are 15.

Also, atomic number is equal to number of protons. So, atomic number is 15.

Mass number = Number of protons + Number of neutrons

Mass number = 15+16=31

The correct representation for X is $_{15}X^{31}$.

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Write the correct representation of an element x which consists of 15 electron and 16 neutron?

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