Science, asked by AryanTiwari124, 8 months ago

3Li,11Na,20Ca,4Be,9F
1.which of this elements belong to the period 3
2.which of this elements have valence 1
3.which of this elements belong to group 2

Answers

Answered by Niki34566
0

1. Na

2. Li and Na

3.Li ,Be and F

Answered by ishwar42
2

Answer:

1. Na

2.Na,Li,F

3. Be,Ca

PLEASE BRAINLISE MY ANSWER PLEASE

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