Question

there are 7 electrons inthe outermost L shell of an element. predict the period and group in the periodic table this element belongs to?

Answer 1

Explanation:

• The first shell is designated as K, second as L and so on.
• In this case, there are 7 electrons in the outermost L shell of the element.  It means that K shell has 2 electrons such that its electronic  configuration is 2,7.
• This element belong to the period 2 of the periodic table and its group number is 17.

Learn more,

Electronic configuration

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