Need asap ! lithium, a group 1 element with an electron configuration of 1s22s1, will form a ion in a chemical reaction. +1 +2 -1 -2

A +1 ion https://quizlet.com/253790701/icy-spice-flash-cards/

It will form a +1 ion

Explanation:

The electronic configuration tells you that this atom has only 1 electron on it's external level. In a chemical reaction the external electrons are the ones involved. In this case the Li atom will lose the electron that belongs to the 2s1 orbital to achieve stabilty. the electron has a negative charge so if the Li loses 1 electron it remains with 1 extra positive charge, therefor it will form an +1 ion

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