Question

Assertion: Group 13 elements have 3 valence electrons
Reason: Period no. of an element is equal to the no.of shells present in an element .
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Answer 1

Assertion is corrected and R is also correct

R is the correct reason of assertion

Answer 2

Assertion is true as in group 13 element have 3 valence electrone ex.boron,aluminium,etc.

Such that reason is not the correct explanations of assertion but it is also true as no. of period is equal to the no. of shells in an element.

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