Question 1
Which statement is
not consistent with the chemistry of group 4A elements?
◦ The +4 oxidation state compounds are ionic and the +2 oxidation state compounds are covalent.
◦ Elements have the outer valence electron configuration of
ns2np2.
◦ The most common oxidation state for the elements of the group is +4.
◦ The +2 oxidation state for lead is the most stable.
Question 2
What statement is
not consistent with the chemistry of tin?
◦ It is an important component of alloys such as bronze, pewter, and some solders.
◦ It is used as a protective coating over steel in making tin cans.
◦ It is a relatively abundant ore within the earth's crust.
◦ It is abstracted from the mineral cassiterite by reduction of the oxide with carbon.
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