1. Which of the following represents a tin(II) ion ?
a) Ti2+
b) Te2+
c) Sn2+
d) Tl2+
2. Which of the following is a cation?
a) vanadium(II) ion
b) fluoride ion
c) hydroxide ion
d) hydrogen carbonate ion
3. CrO42- is called a
a) dichromate ion.
b) chromium ion.
c) chromate ion.
d) chromium oxide ion.
4. The metals belonging to Group 1A form ions with a charge of
a) +1.
b) +2.
c) –1.
d) –2.
5. What is the formula of calcium chloride?
a) CaCl
b) CaCl2
c) Ca2Cl
d) Ca2Cl2
6. What is the formula of magnesium phosphide?
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