Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons

Explanation:

When an atom gains electrons then it tends to obtain negative charge whereas when an atom loses electrons then it tends to gain a positive charge.

Atomic number of phosphorous is 15 and it need 3 more electrons in order to complete its octet. Therefore, by gaining electrons it will result in the formation of ion.

Thus, we can conclude that phosphorous can form an ion called phosphide, which has the formula . This ion contains 18 electrons.

A. contains 18 electrons

Explanation:

Atomic number is defined as the number of protons or number of electrons that are present in an atom. It is characteristic of an element.

Atomic number of phosphorous is 15.

The electronic configuration of phosphorous (P) will be,

Atomic number = Number of electrons = Number of protons = 15

As the phosphorous atom has gained 3 electrons, it will have 15+3= 18 electrons , the phosphorous anion will be having a charge of -3.

The electronic configuration of will be,

Thus the correct statement is this ion contains 18 electrons

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