Chapter U1.19, Problem 6E

Interpretation Introduction

Interpretation:

The noble gas which is closest to magnesium in the periodic table needs to be determined. The method by which magnesium can get the same electronic configuration of the nearest noble gas needs to be explained.

Concept introduction:

Noble gases have very stable electronic configuration with complete octets. Some of the noble gases are He, Ne, Ar, Kr, Xe and Rn.

Answer to Problem 6E

Neon (Ne) is closest to magnesium. Two electrons must be removed from magnesium to make the same electronic configuration as that of neon.

Explanation of Solution

Magnesium has atomic number 12 and neon has atomic number 10. So to make the same electronic configuration magnesium atom needs to remove two electrons from its valence shell. This results in the formation of magnesium ion (Mg^{2 +} ).

Conclusion

Two electrons must be removed from magnesium to make the electronic configuration similar to neon.