Unit 3: Chemical Bond And Nomenclature: Question Preview (ID: 19212)

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Covalent bond is _________ of electrons while ionic bond is _____ of electrons.
a) sharing; transferring
b) transferring; sharing
c) sharing unequally; sharing equally
d) transferring; transferring

Covalent bond is between _____ and _____.
a) metal and metal
b) non-metal and metal
c) non-metal and non-metal
d) metalloid and non-metal

What is an example of covalent bond?
a) K2O
b) NaCl
c) MgCl2
d) I2

Polar covalent bond is sharing electrons _____ while non-polar covalent bond is sharing electrons _____.
a) unequally; unequally
b) equally; equally
c) unequally; equally
d) equally; unequally

What is an ion that K mostly formed?
a) K+1
b) K+2
c) K-1
d) K-2

What's the chemical formula for magnesium oxide?
a) MgO
b) MgO2
c) Mg2O
d) Mg2O2

How many electrons will magnesium likely lose?
a) 1
b) 2
c) 3
d) 4

Which pair will most form an ionic bond?
a) N and O
b) Li and Mg
c) C and O
d) Na and O

What's the chemical formula of dinitrogen trioxide?
a) N2O5
b) N2O3
c) N4O2
d) N3O2

What's the best description of the octet rule?
a) Atoms will gain electrons to have 8 valence electrons.
b) Atoms will lose electrons to have 8 valence electrons.
c) Atoms will share electrons to have 8 valence electrons.
d) All of the above

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