Iron can form a compound with each of the elements below except one. Which element will Iron not combine with?

Question

Sulfur

Potassium

Bromine

Oxygen

Answer 1

Potassium.

Answer 2

Potassium also a metal like iron

Answer 3

Find each of the elements on the periodic chart.

Iron is in group 8-- these elements tend to have a positive charge when combinging with other elements.

potassium is in Group1 with other very active metals. Metals in this group tend to have a positive charge when combining with other elements.

Oxygen is in group 16-- it tends to have a negative charge when combining with other elements.

Sulfur is also in group 16--but is lower in the chart. It can have a positive charge if combined with something that tends to be strongly negative--such as oxygen. But it can be negative is combined with something that tends to be strongly positive, such as iron.

Bromine is in group 17 -- it tends to have a negative charge when it combines with other elements.

So the only choice is potassium.

Answer 4

Potassium, because they are both metals.

Answer 5

Potassium. They are both metals.