S Block Elements Question 10
The number of electrons and protons in the third alkaline earth metal ion will be
[MP PET 2003]
Options:
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} $
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Answer:
Correct Answer: D
Solution:
Third alkaline earth metal is calcium $ _{20}Ca^{40} $ . No. of electron are 20 & No. of proton are 20; e/20, p/20.
BETA
