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The atomic number of potassium and Calcium is 19 and 20 they belong to the same period?
a) which element atomic size is smaller and why
b) which one would be more electronegative
C) to which group Each of them belong belong?
Verified Answer
The atomic number of potassium and Calcium is 19 and 20 they belong to...
Ca lies to the right of K as it has a higher atomic number.

Atomic size decreases on moving from left to right across a period. So, Ca has a smaller atomic size.

Electropositive or metallic character decreases on moving left to right across a period, so K is more electropositive.

K belongs to first group and Ca to the second group.
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The atomic number of potassium and Calcium is 19 and 20 they belong to the same period?a) which element atomic size is smaller and why b) which one would be more electronegativeC) to which group Each of them belong belong?
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