Question

The melting points of lithium, sodium and potassium are:
Lithium 181°C
Sodium 98°C
Potassium 63°C

Predict the melting point of rubidium?
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Answer 1

Explanation:

Lithium, Li 180°C

Sodium, Na 98°C

Potassium, K 63°C

Rubidium, Rb 39°C

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Answer 2

Answer:

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