Question

The atomic number of sulfur (s) is 16. sulfur combines with hydrogen by covalent bonding to form a compound, hydrogen sulfide. based on the number of valence electrons in a sulfur atom, predict the molecular formula of the compound. (explain your answer.)

Answer 1

H2S

Step-by-step explanation:

Answer 2

The molecular formula of hydrogen sulfide is H₂S.

Step-by-step explanation:

• The atomic number of S is 16.0 and its electronic configuration is: 1s² 2s² 2p⁶ 3s² 3p⁴ (2,8,6).

• Based on the number of valence electrons in a S atom that it contains 6 electrons in the outershell.

• It needs 2 electrons to be completely filled in the outershell and be more stable according to octet rule.

• So, it will form two bonds with two hydrogen atoms that each H atom contains 1 electron.

• Thus, The molecular formula of hydrogen sulfide is H₂S.