Name the noble gas atom that has the same electron configuration as each of the ions in the following compounds.

msp;  a .  barium sulfide ,  BaS b .  strontium fluoride ,  SrF 2 c .  magnesium oxide ,  MgO d .  aluminum sulfide ,  Al 2 S 3

(a)

Interpretation:

The noble gas atom that has the same configuration as each of the ions in the given compound are to be predicted.

Concept Introduction:

The distribution of the electrons that exists in the atomic orbital of an atom is collectively known as electron configuration. The description of every electron in an orbital is given by the electron configuration of that atom.

Atoms lose or gain electrons to become stable by attaining nearest noble gas configuration. While doing so, they are converted to their respective ions. The positive ion and the negative ion combine to form their corresponding salt.

The salt given is BaS. It consists of one cation and one anion.

The cation present in BaS is Ba2+.

The electron configuration of Ba with Z=56 is 1s22s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 6s2.

Barium present in BaS is in the form of Ba2+ and the electron configuration of the ion is 1s22s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 

(b)

Interpretation:

The noble gas atom that has the same configuration as each of the ions in the given compound are to be predicted.

Concept Introduction:

The distribution of the electrons that exists in the atomic orbital of an atom is collectively known as electron configuration. The description of every electron in an orbital is given by the electron configuration of that atom.

Atoms lose or gain electrons to become stable by attaining nearest noble gas configuration. While doing so, they are converted to their respective ions. The positive ion and the negative ion combine to form their corresponding salt.

(c)

Interpretation:

The noble gas atom that the has same configuration as each of the ions in the given compound are to be predicted.

Concept Introduction:

The distribution of the electrons that exists in the atomic orbital of an atom is collectively known as electron configuration. The description of every electron in an orbital is given by the electron configuration of that atom.

Atoms lose or gain electrons to become stable by attaining nearest noble gas configuration. While doing so, they are converted to their respective ions. The positive ion and the negative ion combine to form their corresponding salt.

(d)

Interpretation:

The noble gas atom that has the same configuration as each of the ions in the given compound are to be predicted.

Concept Introduction:

The distribution of the electrons that exists in the atomic orbital of an atom is collectively known as electron configuration. The description of every electron in an orbital is given by the electron configuration of that atom.

Atoms lose or gain electrons to become stable by attaining nearest noble gas configuration. While doing so, they are converted to their respective ions. The positive ion and the negative ion combine to form their corresponding salt.