Since neon has 8 valence electrons, a full octet makes neon stable. It is also a noble gas. Then, you do the configuration...
1s2 2s2 2p6
2s holds 2 valence electrons while 2p has 6 that equals a full octet.
The normality is the ratio of the equivalent to the volume of the solvent. To the mixture, 1.182 gms of magnesium should be added.
<h3>What is Normality?</h3>
Normality (N) is the grams or moles of solute per liter of solution.
Magnesium has 2 valence electrons in the outermost shell so,
1 mEq of Mg⁻² ions = atomic number of Mg ÷ valence electron
= 12 ÷ 2
= 6 mg
In a liter solution having 197 meq/l of Mg⁻²:
197 meq/l of Mg⁻² × 6 = 1182 mg
Therefore, 1.182 gms of magnesium ions should be added to the mixture.
Learn more about gram equivalents here:
brainly.com/question/14833835
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