Question

Write the isotope notation for an element with 53 protons and 20 neutron?

Answer 1

The isotope notation : ⁷³₅₃X

Further explanation

Given

53 protons and 20 neutron

Required

The isotope notation

Solution

Isotopes are elements that have the same atomic number with a different mass number

The following element notation,

$\large {{{A} \atop {Z}} \right X}$

X = symbol of element

A = mass number

   = number of protons + number of neutrons

Z = atomic number

   = number of protons = number of electrons, on neutral elements

So the mass number of element = 53 + 20 = 73

Atomic number = 53

The symbol :

$\large {{{73} \atop {53}} \right X}$