<span>Mass number is the number of protons and neutrons in an atom, and it tells us about the mass of the atom in amu, or atomic mass units. Atomic mass is the average mass of all the isotopes of a certain type.</span>
<span>Mass number found on the periodic table</span>
Atomic mass <span>of zinc ( zn ) is 65 u
Answer B</span>
Answer:
No.
Explanation:
No organism can detect X-rays or radio waves
Your answer would be D, single replacement
