Question

Atomic number (Z) is equal to _____

Study the data given below and answer the questions which follow:

Identify the correct atomic structure of the Al³⁺ ion where n and p represent the number of neutrons and protons respectively.

Determine the valency of the following atoms: X, Y, Z, W

Write down the electron distribution of the Phosphorus atom. How many electrons are there in the M shell? (Atomic number of phosphorus is 15).