Answer
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Work Step by Step
(a) The element in group 14 and the fourth period is Germanium (Ge).
(b) One element similar to sulfur is oxygen (O), which is in the same group (group 16) as sulfur and has similar chemical properties. One element unlike sulfur is sodium (Na), which is a metal and is located in group 1.
(c) The alkali metal in the fifth period is rubidium (Rb), which is in group 1 and located in the fifth period of the periodic table.
(d) The halogen element in the sixth period is astatine (At), which is in group 17 and located in the sixth period of the periodic table.
