This energy level model shows two electrons on the first energy level ... The calcium reacts with the water but does not get nearly as hot as either the sodium or potassium. Also, the calcium ...

The positive and negative ions attract each other and form the ionic compound sodium chloride. One calcium and two chlorine atoms are near each other. An electron from each atom feels the attraction ...

Sodium intake should be limited – children should take only a small amount of salt in meals as too much can be harmful to their developing kidneys. Children aged 6 years and under should have no ...

Cations can be classified as either acidic (acid- forming) or basic. The common acidic cations are hydrogen and aluminum; common basic ones are calcium, magnesium, potassium and sodium. The proportion ...