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07/10/2021 6:21 pm
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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.
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07/10/2021 6:24 pm
Li, Na, K: All these elements are metals having a valency of 1.
Ca, Sr, Ba: All these elements are metals having a valency of 2.
Cl, Br, I: All these elements are halogens.