Question

3+
Key:
4N
=proton
=electron
=neutron
N
What element is this

Answer 1

Answer:

Name Protons Neutrons Electrons Atomic Number (Z) Mass Number (A)

Table  4.5.1 : Atoms of the First Six Elements

Hydrogen 1 0 1 1 1

Helium 2 2 2 2 4

Lithium 3 4 3 3 7

Beryllium 4 5 4 4 9

Boron 5 6 5 5 11

Carbon 6 6 6 6 12

Explanation: