what is helium and in which period and group it belongs to
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helium is a noble gas with 2 electrons in its outer most shell
it belongs to 18th group and 1st period
hope it helps u .........
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helium is an element.
it's atomic number is 2.
its symbol is (He) .
it belongs to 18 group,
period is 1.colourless, odourless element.
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