Which substance has polar covalent bonds?
A) SO₂
B) N₂
C) F₂
D) BaO
Correct Answer:
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Q78: If two atoms from the same element
Q79: The formula of magnesium nitride is
A)Mg₃N₂.
B)Mg₂N₃.
C)Mg₂N.
D)MgN.
Q80: Octet means
A)stable electrons.
B)valence electrons.
C)eight.
D)filled shell.
Q81: Which of the following elements has the
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Q84: Which of the following pairs of atoms
Q85: The most electronegative atom is
A)Cl.
B)F)
C)Na.
D)I)
Q86: Which of the following elements has the
Q87: When a fluorine atom reacts with a
Q88: In a polar covalent bond,electrons are
A)shared equally.
B)shared
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