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Which one of the following alkali metals has lowest melting point? |
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(a) |
Sodium |
(b) |
Potassium |
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(c) |
Rubidium |
(d) |
Caesium |
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Which one of the following alkali metals has lowest melting point? |
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(a) |
Sodium |
(b) |
Potassium |
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(c) |
Rubidium |
(d) |
Caesium |
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