Question

Founder of atom
Its number
Its mass
And its density

Answer 1

John dalton is the first founder of atom with the ATOMIC THEORY.

hey!!!!!

different atom haves different mass and no. !!!!!!!!........

Answer 2

John Dalton is the founder.
6 protons in a atom.
mass is 12amu
density is
$2.3 \times 10 ^{17} kg \: per \: meter \: qube$