Which three groups of the Periodic Table contain the most elements classified as metalloids (semimetals)?
1. 1, 2, and 13
2. 2, 13, and 14
3. 14, 15, and 16
4. 16, 17, and 18
3
Which element has the highest first ionization energy?
1. sodium
2. aluminum
3. calcium
4. phosphorus
4
Which compound forms a colored aqueous solution?
1. CaCl22
2. CrCl3
3. NaOH
4. KBr
2
When a metal atom combines with a nonmetal atom, the nonmetal atom will
1. lose electrons and decrease in size
2. lose electrons and increase in size
3. gain electrons and decrease in size
4. gain electrons and increase in size
3
According to Reference Table S, which of the following elements has the smallest atomic radius?
1. nickel
2. cobalt
3. calcium
4. potassium
1
