GENERAL KNOWLEDGE

Detailed explanation-1: -This group number corresponds to the number of valence electrons for every element that is in that group; therefore, magnesium has 2 valence electrons. When we are drawing Lewis structures, we draw the valence electrons as dots around the atomic symbol.

Detailed explanation-2: -The electron-dot symbol for Mg shows two valence electrons as single dots on the sides of the symbol Mg.

Detailed explanation-3: -Answer. The lewis dot structure of Mg2+ is 1s2 2s2 2p6 3s2 and Mg2+ has the configuration 1s2 2s2 2p6. Lewis symbols, which represent the electrons as dots, are used in the Lewis structure. Two electrons are lost from the magnesium atom, creating the magnesium ion, or Mg2+.

Detailed explanation-4: -Lewis symbol for magnesium ion has no dots and a +2 charge.; this means one additional electron compared to a fluorine atom. Lewis symbol for fluoride ion has 8 dots and a-1 charge.

Detailed explanation-5: -Each atom in this Lewis structure should have an octet of electrons (8 electrons). Remember that each lone electron pair counts as two electrons and each bond counts as two electrons (for each of the atoms participating in the bond).