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Subjects
Science State Board
Class 9
Chemical bonding
Textbook questions
8.
Answer briefly V
Exercise condition:
8
m.
1.
Fill in the following table according to the type of bonds formed in the given molecule.
Answer variants:
CaCl_2
CaO
CCl_4
CO_2
KBr
CO
HF
Ionic
bond
Covalent
bond
Coordinate
covalent
bond
2.
The characteristic that defines an ionic compound is that
it undergoes molecular reactions.
it has low melting point.
it often exists as a gas at room temperature.
it is hard and brittle.
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