Which of the following is true for a cell that has dna present inside a nucleus?

a: it must be a part of the oldest known fossils

b: it must be a part of a eukaryote

c: it must be a part of a bacterium

d: it has a nucleoid

it must be a eukaryote because prokaryotic dna floats inside of it.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8