Which of the following metals reacts vigorously with cold water?
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The maximum number of electrons that can be accommodated in M shell is
How many atoms will one mole of Carbon (C-12) contain?
Which of the following is NOT a noble gas?
The most active ingredient in bleaching powder is
The gas evolved when sodium carbonate reacts with hydrochloric acid is
Except Helium, all noble gases have how many electrons in the outermost shell?
Which of the below options is called a laughing gas?