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प्रश्न
Which one of the following is a correct electronic configuration of sodium?
विकल्प
2, 8
8, 2, 1
2, 1, 8
2, 8, 1
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उत्तर
2, 8, 1
Explanation:
The atomic number of sodium (Na) = 11
Its electronic configuration = 2, 8, 1
संबंधित प्रश्न
Summarize the rules for writing of distribution of electrons in various shells for the first eighteen elements.
What is the maximum number of electrons which can be accommodated in the K shell of an atom?
What is the maximum number of electrons which can be accommodated in the L shell of an atom?
Name the shell of an atom which can accommodate a maximum of :
(a) 2 electrons ?
(b) 18 electrons ?
Give scientific reason.
Atomic mass number is a whole number.
An atom X has 2, 8, 7 electrons in its shell. It combines with Y having 1 electron in its outermost shell.
Write the formula of the compound formed.
The atom of aluminium is represented by 27Al13. Write down the number of protons in the different orbits or shells in one atom of aluminium.
Name an element which has the same number of electrons in its first and second shell.
The electronic configuration of an atom is 2,8,3. The valency of the atom is ______.
Explain the electronic configuration of atoms with an illustration.
