Question 1
Atoms of the same element with different mass numbers are called
◦ ions.
◦ neutrons.
◦ allotropes.
◦ chemical families.
◦ isotopes.
Question 2
Complete the following chart, in order from left to right
Ion | Mass Number | Protons | Neutrons | Electrons |
40Ca2+ | | | | |
◦ 40, 20, 20, 20
◦ 40, 20, 20, 18
◦ 20, 20, 40, 20
◦ 40, 20, 20, 22
◦ 20, 40, 20, 22