Question

In the Lewis structures listed here, M and X represent various elements in the third period of the periodic table. Write the formula of each compound using the chemical symbols of each element:

Short answer

The Lewis structure having the formula as:

1. \({\rm{MgS}}\)
2. \({\rm{AlC}}{{\rm{l}}_{\rm{3}}}\)
3. \({\rm{N}}{{\rm{a}}_{\rm{2}}}{\rm{S}}\)
4. \({\rm{A}}{{\rm{l}}_{\rm{2}}}{{\rm{S}}_{\rm{3}}}\)

Step-by-step solution

Define Chemical Bonding

A chemical bond is a long-term attraction between atoms, ions, or molecules that allows chemical compounds to form.

Explanation

Due to third-period elements may create single positive charge cations\({\rm{Na(N}}{{\rm{a}}^{\rm{ + }}}{\rm{)}}\).

The double positive charge cations can be formed by\({\rm{Mg(M}}{{\rm{g}}^{{\rm{2 + }}}}{\rm{)}}\).

Thetriple positive charge cations can be formed by\({\rm{Al(A}}{{\rm{l}}^{{\rm{3 + }}}}{\rm{)}}\).

\({\rm{Cl(C}}{{\rm{l}}^{\rm{ - }}}{\rm{)}}\)can also produce a single negative charge anion.

The double negative charge anion is \({\rm{S(}}{{\rm{S}}^{{\rm{2 - }}}}{\rm{)}}\).

Writing the formula

(a)

The chemical formula is:

\({\rm{MgS}}\)

Therefore, the formula is: \({\rm{MgS}}\).

Writing the formula

(b)

The chemical formula is:

\({\rm{AlC}}{{\rm{l}}_{\rm{3}}}\)

Therefore, the formula is: \({\rm{AlC}}{{\rm{l}}_{\rm{3}}}\).

Writing the formula

(c)

The chemical formula is:

\({\rm{N}}{{\rm{a}}_{\rm{2}}}{\rm{S}}\)

Therefore, the formula is: \({\rm{N}}{{\rm{a}}_{\rm{2}}}{\rm{S}}\).

Writing the formula

(d)

The chemical formula is:

\({\rm{A}}{{\rm{l}}_{\rm{2}}}{{\rm{S}}_{\rm{3}}}\)

Therefore, the formula is: \({\rm{A}}{{\rm{l}}_{\rm{2}}}{{\rm{S}}_{\rm{3}}}\).