Question

atoms family atomic math challenge
oxygen
15.999
atomic number equals the number of __ or __
atomic mass equals the number of __ + __
o
15.999
atomic # = ____
zinc
65.39
atomic # = ____
li
6.941
atomic # = __ atomic mass = __

Explanation:

The atomic number of an element is equal to the number of protons or electrons in a neutral atom. The atomic mass is approximately equal to the sum of the number of protons and neutrons. For oxygen, atomic number is 8, for zinc atomic number is 30 and for lithium atomic number is 3.

Answer:

Atomic number equals the number of protons or electrons.
Atomic mass equals the number of protons + neutrons.
For oxygen: Atomic # = 8
For zinc: Atomic # = 30
For lithium: Atomic # = 3