WAEC - Chemistry (2020 - No. 43)
How many electrons does \({31}_{15}\)P\(^3-\) contain?
12
15
16
18
Paliwanag
- Phosphorus also has 15 electrons.
- Here we have P3- which means that this atom has gained 3 electrons. So, P3- has 18 electrons.
- Phosphorus also has 15 electrons.
- Here we have P3- which means that this atom has gained 3 electrons. So, P3- has 18 electrons.