Question

Grade 7 IIT Foundation Chemistry:

How many electrons does Calcium recieve to attain stability?

Clue:The Electronic configuration of Calcium is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

Answer I will mark as brainliest.​

Answer 1

Answer:

Calcium must lose 2 atoms to attain stability.

Explanation:

I will go with electronic configuration with the K L M N shells

Calcium atomic no. is 20

So K shell 2

L shell 8

M shell 8

N shell 2

So if it loses 2 electrons it will rech octet state.

But you had asked about the no. of electrons it must receive, but that won't be possible so it loses electrons instead.

Hope you found my answer useful.

Answer 2

Answer:

By gaining electrons, the atom forms anion. As the valence electronic configuration of calcium contains two electrons in s orbital, it will be difficult for calcium to gain 6 electrons to form stable configuration than losing its two electrons. So the metal calcium usually forms cation not an anion.