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प्रश्न
The atom of an element X has 7 electrons in its M shell.
(a) Write the electronic configuration of element X.
(b) What is the atomic number of element X?
(c) Is it a metal or a non-metal?
(d) What type of ion will be formed by an atom of element X? Write the symbol of the ion formed.
(e) What could element X be?
उत्तर
(a) Electronic configuration of the element X is
Element X : \[{\underset{2}{\text{ K }}\underset{8}{\text{ L }}\underset{7}{\text{ M }}}\]
(b) Atomic number of the element X will be 17.
(c) Element X is a non-metal because there are 7 electrons in its outermost orbit. In order to complete its octet (to get 8 electrons), it will gain one electron. An element which gains electrons in order to complete its octet is a non-metal.
(d) The element will form an anion by gaining an extra electron in order to complete its octet.
Symbol of an ion of X will be X–.(e) X is Chlorine.
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संबंधित प्रश्न
Summarize the rules for writing of distribution of electrons in various shells for the first eighteen elements.
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(a) 8 electrons ?
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Explain the octet rule for the formation of –
Nitrogen molecule from two nitrogen atoms.
The correct electronic configuration of potassium is ______.
Total number of electrons that can be accommodated in an orbit is given by __________.
Explain the electronic configuration of atoms with an illustration.
