Multiple Choice
When two atoms share a pair of electrons, the bonding is referred to as:
a) Ionic.
b) Covalent.
c) Unstable.
d) Hydrogen.
e) Polar.
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3. Chemical Principles of Microbiology
Covalent Bonds
Multiple Choice
What makes a covalent bond nonpolar?
a) The bonded atoms share electrons unequally.
b) The bonded atoms share electrons equally.
c) The bonded atoms have equal electronegativities.
d) The bonded atoms have unequal electronegativities.
e) a and d only.
f) b and c only.
A
The bonded atoms share electrons unequally.
B
The bonded atoms share electrons equally.
C
The bonded atoms have equal electronegativities.
D
The bonded atoms have unequal electronegativities.
E
a and d only.
F
b and c only.
Verified step by step guidance1
Understand the concept of electronegativity: Electronegativity is the ability of an atom to attract shared electrons in a chemical bond. In a covalent bond, atoms share electrons.
Define nonpolar covalent bonds: Nonpolar covalent bonds occur when two atoms share electrons equally, meaning there is no charge separation across the bond.
Identify the role of electronegativity in nonpolar bonds: For a bond to be nonpolar, the atoms involved must have equal electronegativities, ensuring equal sharing of electrons.
Analyze the given options: Option b states that bonded atoms share electrons equally, and option c states that bonded atoms have equal electronegativities. Both conditions are necessary for a bond to be nonpolar.
Conclude based on analysis: Since both equal sharing of electrons and equal electronegativities are required for a nonpolar covalent bond, the correct answer is 'b and c only'.
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