Answer:
the atomic number is 56
the number of electrons is 56
the number of protons is 56
the mass number is 137
the number of neutrons is 81
Explanation:
science test
Answer:
A nucleus and a cell membrane.
Explanation:
Answer:
It has carbon as a component element
Explanation:
There are exactly 24 chromosomes in a girl cell and 24 in a boy cell.