Chemistry, asked by krishnaking3473, 1 year ago

An element x has atomic number 17 and the number of neutron is 18000 find out the valency and period of x

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Answered by vivek007146

0

electronic configuration is 2,8,7
so it valency=7 as outermost shell has 7 electrons
and in 3rd period as it has 3 shells

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