ഏറ്റവും ഭാരം കുറഞ്ഞ മൂലകം?
Aഹൈഡ്രജൻ
Bഓക്സിജൻ
Cനൈട്രജൻ
Dആർഗൺ
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Related Questions:
In which of the following reactions of respiration is oxygen required?
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പ്രോട്ടോണിന്റെ എണ്ണമായ ആറ്റോമിക നമ്പർ സൂചിപ്പിക്കുന്ന പ്രതീകം ?
Deficiency of which element is the leading preventable cause of intellectual disabilities in world:
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