Question

Which compound has covalent bonds? 1.) H2O 2.)Li2O 3.) Na2O 4.) K2O

Answer 1

Answer:

CaO2

Explanation:

Answer 2

The compound that forms a covalent bond from the given options is H₂O or Water molecule (option 1).

• Because chemically stated, when gaining or losing electrons is not feasible, a covalent connection is formed between two elements.
• The hydrogen in the water molecule has valency +1, and it only requires one extra electron to achieve a stable configuration.
• As a result of sharing an electron with oxygen, two hydrogen atoms create a covalent connection.
• The valency of sodium, lithium, and potassium is +1 in oxides, however, they require 7 additional electrons to form a stable state, which is chemically impossible.
• As a result, one electron is lost and an ionic bond is formed with the oxygen atom due to the high electronegativity difference.
• As a result, the water molecule forms a covalent link.