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s.PNG The number of electrons in the penultimate shell of S is:-

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The shell which is before the valence shell is called the penultimate shell. If 'n' is the valence shell then (n-1) is the penultimate shell

Electronic configuration of S(sulphur) = 2. 8. 6.

so, 

Number of e- in valence shell=6

Number of e- in penultimate shell=8

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Ankit

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The tungsen  filament for electric bulb is formed by

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Agnivesh Rajaram Patil

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