Question

1. choose the best answer.

magnesium has an electronegativity of 1.31. oxygen has an electronegativity of 3.44.
based on the electronegativity difference of magnesium and oxygen, which type of bond will form?
nonpolar covalent
ionic
polar covalent

1. choose the best answer.

the electronegativity of carbon is 2.55. the electronegativity of nitrogen is 3.04.
what is the electronegativity difference?
0.49
0.44
5.59
0.54

Explanation:

Question 8

• For non - polar covalent bonds, the electronegativity difference (\(\Delta EN\)) is \(0\leq\Delta EN<0.5\).
• For polar covalent bonds, \(0.5\leq\Delta EN < 1.7\).
• For ionic bonds, \(\Delta EN\geq1.7\).
• Calculate \(\Delta EN\) for Mg (\(EN = 1.31\)) and O (\(EN=3.44\)): \(\Delta EN=|3.44 - 1.31|=2.13\). Since \(2.13\geq1.7\), the bond is ionic.

• To find the electronegativity difference (\(\Delta EN\)) between two elements, use the formula \(\Delta EN=|EN_1 - EN_2|\).
• Given \(EN_{C}=2.55\) and \(EN_{N}=3.04\), then \(\Delta EN = |3.04 - 2.55|=0.49\).

Answer:

ionic

Question 9