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How to find group and period

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How to find group and period

Posted by Muskan Sekho 6 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Avantika Tayal 6 years, 10 months ago

For period :no.of valenced shell for all elements. Group For s block element :valences electron. For p block:12+valenced electron. For d clock:valenced e– of s +valenced e– of d. For f:just write f block elwment. For eg: predict grp and period of an elwmwnt having atomaic no.17 Electrknic conf.is 1s2 2s2 2p6 3s1 Grp is 3 Period is 1

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