What is the atomic number of Strontium?
...What is the atomic number of Strontium?
38
39
40
41
Correct answer is A
No explanation has been provided for this answer.
A chemical widely used as a fertilizer is? ...
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Which of the following metals is not extracted by electrolysis ? ...
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Which of the following bonds exist in crystalline ammonium chloride (NH4Cl)?...