Question

The ratio of electron, proton and neutron in tritium is :

• A. $1:1:1$
• B. $1:1:2$
• C. $2:1:1$
• D. $1:2:1$

Answer 1

The correct option is B $1:1:2$

The atomic number and the mass number of tritium are 1 and 3 respectively.Tritium contains 1 electron, 1 proton and 2 neutrons. The ratio of the number of electrons, protons and neutrons in tritium is $1:1:2$