Question

No. of electrons and neutrons in an atom are 3 and 4 respectively. Find its 1. Atomic number 2. Mass number?

Guys this is class 9 chemistry question Ch- Structure of atom please answer this question with explanation and don't Spam or Will be reported please answer this is so much urgent please!!​

Answer 1

Explanation:

Atomic no. is equal to no. of electron so 1..is 3

and Mass no. is equal to protons +neutrons.

we know that no.of protons is equal to electron.

so 2...7u

Answer 2

the number of electrons = number of protons

so, the atomic mass= neutrons + protons

= 3+4= 7u