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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
Summarize the rules for writing of distribution of electrons in various shells for the first eighteen elements.
Which one of the following is a correct electronic configuration of sodium?
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?
Which shell of an atom can accommodate a maximum of :
(a) 8 electrons ?
(b) 32 electrons ?
Which of the following is the correct electronic configuration of sodium?
The following element is given \[\ce{_9W}\]. State the electronic configuration and state whether it is a metal, non-metal, or inert gas.
Select the correct answer from the answer in the bracket to complete the sentence.
The maximum number of electrons in M-shell is _______.
Write down the electron distribution of chlorine atom. How many electrons are there in the L shell? (Atomic number of chlorine is 17).
Which block of the periodic table contains metals, non-metals, and metalloids?
Explain the electronic configuration of atoms with an illustration.
