Question

1. what are some characteristics of alkali metals? select two correct answers. alkali metals belong to group 10 of the periodic table. alkali metals are not reactive with other elements. alkali metals are highly reactive and good conductors of electricity. alkali metals all have two valence electrons. alkali metals have a single electron in the outermost shell.

Explanation:

1. Analyze each option:

• "Alkali metals belong to group 10 of the periodic table": Incorrect, alkali metals are in group 1.
• "Alkali metals are not reactive with other elements": Incorrect, alkali metals are highly reactive.
• "Alkali metals are highly reactive and good conductors of electricity": Correct, alkali metals are reactive (due to 1 valence electron) and are metals, so good conductors.
• "Alkali metals all have two valence electrons": Incorrect, they have 1 valence electron.
• "Alkali metals have a single electron in the outermost shell": Correct, this is why they are reactive.

Answer:

C. Alkali metals are highly reactive and good conductors of electricity, E. Alkali metals have a single electron in the outermost shell