Question

Hydrogen has three isotopes written as
H11, H21, H31
Explain Why
(a) These isotopes have almost identical chemical properties.
(b) They are electrically neutral.

Answer 1

Isotopes is same Atomic Number

Explanation:

As per definition,  

1. Element is being made up of a total of protons and not that of neutrons. And protons are positive charge (+) carriers.
2. Protons makes the total of electrons which are required to charge (+) positive charge of atom  as neutral although the arrangement refers to chemical properties or element and its own compounds with electron number.  

Isotopes and their Characteristics

• Isotopes are those elements with same number of protons and electrons as well which leads to  their same chemical properties.
• Isotopes of elements are those which have different mass number owing to different number of neutrons but same number of protons.
• Electrically, the same number of protons (+) with electrons (-), is the reason to make isotopes are neutral.