Question

Fill in the Blanks :

1) Number of Proton + Number of Neutron is the ________ of an element.
2) A-Z indicates the number of _______ in the nucleus of an atom.
3) Z = number of protons in the nucleus of an atom = number of _____ in a neutral atom.

Answer 1

Step-by-step explanation:

1. Mass number

2. Protons

3. Electrons