Question

Write the names from the description.
a. The period with electrons in the
shellsK, L and M.
b. The group with valency zero.
c. The family of nonmetals having
valency one.
d. The family of metals having
valency one.
e. The family of metals having
valency two.
f. The metalloids in the second and
third periods.
g. Nonmetals in the third period.
h. Two'elements having valency 4.
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Answer 1

a)3rd period

b) group 18 or zero group

c)halogen family or group 17

d)group 1

e)group 2

f)

g) sulphur, chlorine, phosphorus

h)carbon