Question

write the chemical symbols for three different atomic cations with 20 protons

Answer 1

Answer:these would be positive ions (cations) which have lost their outer shell e-

to become like Ar

they are

K+

Ca++

Ga+++

Explanation: hope this helps

Answer 2

Answer:

The 3 elements that has 3 electrons are:

Li, Be+ and B2+

Explanation:

Hoped that helped :)