Question

Write the complete nuclear symbol for a nucleus of oxygen with 8 protons & 10 neutrons?

Answer 1

Answer: The complete nuclear symbol will be $_8^{18}\textrm {O}$

Explanation:

The nuclear symbol is written as: $_Z^A\textrm {X}$ where Z= atomic number , A = mass number X = symbol of element

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

For an electrically neutral atom,

Atomic number = Number of electrons = Number of protons = 8

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons  

Mass number = 8 + 10 = 18

Thus complete symbol will be $_8^{18}\textrm {O}$