Question

1) consider the following elements .
na(11) AL (13) CL (17) K(19)
for the given elements,find out
i) valancy ii) period number iii) group number ​

Answer 1

Answer:

Na:

valency=1

period no.=3

group no.= 1

Al:

valency=3

period no.=3

group no.=3

Cl:

valency=1

period no.=3

group no.=17

K:

valency=1

period no.=4

group no.=1

Explanation:

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Answer 2

ELEMENT | VALENCY | PERIOD | GROUP

Na ( 11 ) | 1. | 3. | 1

Al ( 13 ) | 3. | 3. | 13

Cl ( 17) | 7. | 3. | 17

K ( 19 ) | 1. | 4. | 1