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gtnhenbr [62]
3 years ago
6

The valency of calcium is2 ? what does it mean​

Chemistry
1 answer:
nalin [4]3 years ago
5 0

Answer:

hope you like it

Explanation:

because ouytermost shell contains two electrons

calcium is in group 2 so its valency is two valency is the number of outer shelll electrons it needs to have an stable outer shell . it needs 2 more .

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Molar mass :

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<span>2 Na + Cl</span>₂<span> = 2 NaCl
</span>
2 x 23 g Na -------> 71.0 g Cl₂
96.6 g Na ----------> ?

Mass Cl₂ = ( 96.6 x 71.0 ) / ( 2 x 23 )

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= 149.1 g of Cl₂

hope this helps!

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The best and most correct answer among the choices provided by your question is the fourth choice.

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Answer:

Damian here! (ノ◕ヮ◕)ノ*:・゚✧

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Explanation:

hope this helps? :))

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