Answer to Question #54598 in General Chemistry for ramesh kumar

Question #54598
What are alkali metals? Why do these metals not occur in free state in nature? List the principal ores of alkali metals.
Expert's answer
Alkali metals are:
- Lithium (Li);
- Sodium (Na);
- Potassium (K);
- Rubidium (Rb);
- Cesium (Cs);
- Francium (Fr).
All alkali metals have their outmost electron in the s-orbital. This pre-determines their high chemical reactivity. So that alkali metals cannot be find in the environment in the free state.
The principal ores of alkali metals are:
- Lithium (Li) - Petalite, lepidolite;
- Sodium (Na) – Sodium chloride, Borax;
- Potassium (K) – Sylime, Carnallite;
- Rubidium (Rb) - Lepidolite;
- Cesium (Cs) - Pollucite;
- Francium (Fr) – trace element in the Uranium and Thorium ores.

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Assignment Expert
15.09.15, 17:03

Dear jagan nath, please use panel for submitting new questions. Also you can read the answer here.

jagan nath
15.09.15, 16:34

why is berylium hydride polymeric in nature ? dISCUSS THE STRUCTURE OF POLYMERIC BERYLIUM HYDRIDE

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