Question

Can anyone please answer these???? Pleaseee It's urgent. I will mark you as brainliest. Please

Answer 1

1.it is inert gas configuration
of he , ne ,ar, kr ,xe ,rn
2.this structure is lewis structure
3.valency of he -- it has 2 electrons in its only shell
but its duplet is completed
so we can say that valency =0. (he)
4. these all are inert (noble) gases so they have low reactivity or we can say almost 0 .
but exceptional case is xe
it make compounds forming chemical reactions i.e XeO3
XeF2.etc
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