Except Helium, all noble gases have how many electrons in the outermost shell?
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The number of neutrons present in a nitrogen atom is ___.
The most active ingredient in bleaching powder is
Acid rain is caused by release of ___ and___ into the air.
Which one of the following oxides of Nitrogen is also known as Laughing Gas?
The maximum number of electrons that can be accommodated in a shell is indicated by the formula
The maximum number of electrons that can be accommodated in M shell is
There are 15 protons and 22 neutrons in the nucleus of an element. What is its mass number?
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