Why is magnesium positioned in Group 2 of the periodic table?

All the elements within a group have the same number of electrons in their outermost shell. Magnesium is in group 2 because a magnesium atom has 2 electrons in its outer shell/outermost energy level.
OR give answer in terms of Magnesium's electronic configuration: 2.2

Answered by Jyothi D. Chemistry tutor

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