Gujarat BoardEnglish MediumSTD 9ScienceModel Paper 31 Mark
MCQ
Elements with valency 1 are
A
always non-metals
✓
either metals or non-metals
C
always metalloids
D
always metals
✓
Answer
Correct option: B.
either metals or non-metals
(b) either metals or non-metals Explanation: Elements with valency 1 are easily loss or gain electron. So, elements with valency 1 are either metals or nonmetals. For example hydrogen is nonmetal and Lithium is metal both having valency 1.
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