Question
Consider the following elements:
Ca, Cl, Na, I, Li, Ba, Sr, K, Br.
Separate these elements into three groups (families) of similar properties. State one property in each case on the basis of which you have made your choice.
Ca, Cl, Na, I, Li, Ba, Sr, K, Br.
Separate these elements into three groups (families) of similar properties. State one property in each case on the basis of which you have made your choice.
