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  • The electronic configuration of an element 'X' is 1s2 2s2 2p6 3s2 3p6. Then answer thefollowing questions.i) What is the atomic number of element ‘X’ ?ii) How many electrons are present in the outermost shell of an atom ?iii) What is the (n + l) value

The electronic configuration of an element 'X' is 1s2 2s2 2p6 3s2 3p6. Then answer thefollowing questions.i) What is the atomic number of element ‘X’ ?ii) How many electrons are present in the outermost shell of an atom ?iii) What is the (n + l) value of highest energy orbital in the atom of element ‘X’ ?iv) Write the name of the element ‘X’ ?​

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(1) Atomic number of element 'X' is 18

(2) 8 electrons are present in outer most shell.

(3) 3 i.e value of n +1 i.e Value of l =4

(4) X element is Argon

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Sumit Saini

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