Write the names
from the description.
a) The periods with the description.
b) The family of non-metals having valency one.
c) The family of metals having valency one.
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Write the names
from the description.
a) The periods with the description.
b) The family of non-metals having valency one.
c) The family of metals having valency one.
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a)Periods are in horizontal on modern periodic table
b)Group 17 halogens having the valency one I family of non-metals
c)Group 1 hydrogen H2 having the valency one in family of metals