Question

Name the following :
1. Two borderline elements of group 14 (or IV A).

2. Two elements showing properties of both metals and non metals.


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1. ____ when used with butter having butyrate acid , can cure acidity.

1. Lime Water 2. Soda water
3. Calcium Carbonate
4. Lime Juice.

Answer 1

1. Silicon and germanium are two borderline elements of group 14

2. Substances having properties of both metals and nonmetals are metalloids.

E.g. silicon Calcium carbonate. Calcium carbonate is a base which in reacting with butyrate acid, nullifies the effect of the acid and hence the acidity in the stomach is eliminated. CaCO3 is very mild and harmless.