The period and group numbers of the element h | vedclass

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(A) The element with the highest electronegativity in the periodic table is Fluorine $(F)$.Fluorine has an atomic number of $9$,and its electronic con

Vedclass · Accepted Answer

$2, 17$

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(A) The element with the highest electronegativity in the periodic table is Fluorine $(F)$.Fluorine has an atomic number of $9$,and its electronic configuration is $1s^2, 2s^2, 2p^5$.Since the highest principal quantum number is $n = 2$,it belongs to the $2^{nd}$ period.It has $7$ valence electrons $(2s^2, 2p^5)$,which places it in Group $17$ (the Halogen group).Therefore,the period and group numbers are $2$ and $17$ respectively.

The period and group numbers of the element having maximum electronegativity in the long form of the periodic table,respectively,are

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