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प्रश्न
Give a reason for the following:
Helium is chemical extremely unreactive.
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उत्तर
Helium has its outermost shell completely filled i.e. 2 electrons in K shell.
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संबंधित प्रश्न
What is the maximum number of electrons which can be accommodated in the L shell of an atom?
What is the maximum number of electrons which can be accommodated in the :
(a) innermost shell of an atom?
(b) outermost shell of an atom?
Name the shell of an atom which can accommodate a maximum of :
(a) 2 electrons ?
(b) 18 electrons ?
Which of the following represents the correct electron distribution in magnesium ion?
An element has an atomic number 12. How many electrons will be present in the K, L and M energy shells of its atom?
Differentiate between the term Duplet and octet rule.
The following element is given \[\ce{_14X}\]. State the electronic configuration and state whether it is a metal, non-metal, or inert gas.
Give a reason for the following:
The shells surrounding the nucleus of an atom are also called ‘energy levels’.
For an atom ‘X’, K, L and M shells are completely filled. How many electrons will be present in it?
The maximum No. of electrons that can be accommodated in the M shell is ______.
