deelashasharma
22.09.2019 •
Mathematics
When a calcium atom forms an ion, it loses two electrons. what is the electrical charge of the calcium ion? a. -2 b. -1 c. +1 d. +2
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Ответ:
Ответ:
Ответ:
the surface area of cube is 6a^2
6a^2= 6(5)^2=6(25)=150
area=150