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An element X has mass number …

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An element X has mass number 35 and the number of neutrons, is 18. Identify the group number and period of X.

Posted by Nandini Saini 6 years, 8 months ago

CBSE > Class 10 > Science

3 answers

G K 6 years, 8 months ago

Grp no. 17...sorry

G K 6 years, 8 months ago

Mass no. X - no. of neutron... 35-18=17 2,8,7 i.e grp no. 7 and period no. 3 ....chlorine.

Anush Jain 6 years, 8 months ago

Group no.17 and period 3

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