Chemistry

Nancy Owens

4 November, 23:58

The electron configurations of some elements are given. Based on the electron configurations, which elements can likely form ions with multiple charges?

zinc [Ar] 3d10 4s2

iron [Ar] 3d6 4s2

sodium [Ne] 3s1

cobalt [Ar] 3d7 4s2

silver [Kr] 4d10 5s1

A student has a piece of aluminum metal. Which is the most reasonable assumption the student could make about the metal?

A.

It would only conduct electricity if it were melted.

B.

It could melt and boil if thrown into a campfire.

C.

It would break if it were hit with a hammer.

D.

It will always have the exact same shape.

E.

It could be stretched into a thin wire.