Which of the following options represents the number of neutrons present in aluminium?

Correct option is B

$\text{Number of Neutrons}=\text{Atomic Mass}-\text{Atomic Number}$

For Aluminium (Al):

• Atomic Number (Z) = 13 (This represents the number of protons in the nucleus of an atom of aluminium).

• Atomic Mass (A) ≈ 27 (This represents the sum of protons and neutrons).

Now, using the formula:

$\text{Number of Neutrons}=27-13=14$

Thus, aluminium has 14 neutrons in its most common isotope.

Information Booster:

• Atomic Number (Z): The atomic number of an element represents the number of protons in the nucleus of an atom. For aluminium, it is 13.

• Atomic Mass (A): The atomic mass of an element represents the average mass of an atom of that element, taking into account the isotopes and their relative abundance. For aluminium, it is approximately 27.