A) \[\frac{e}{20},\,\,\frac{p}{20}\]
B) \[\frac{e}{18},\,\,\frac{p}{20}\]
C) \[\frac{e}{18},\,\,\frac{p}{18}\]
D) \[\frac{e}{19},\,\,\frac{p}{20}\]
Correct Answer: D
Solution :
Third alkaline earth metal is calcium \[_{20}C{{a}^{40}}\]. No. of electron are 20 & No. of proton are 20; e/20, p/20.You need to login to perform this action.
You will be redirected in
3 sec