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Calculate the electonegativity of silico...

Calculate the electonegativity of silicon using Allred -Rochow method .(Covalent radius of silicoan `=1.175Å)`.

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Allerd -Rochow equation si `,X=0.359 (Z_(eff))/(r^(2))+0.7441`
(`E_(eff)` is calculated on the basls of Slater s rules taking all the electrons ).
Electronic configuration of `Si` is `1s^2 2p^6 , 3s^2 2p^2`
`Z_(eff) =14- (0.35xx3 +0. 85xx8 + 2 xx 10) = 4/15`
` X = -0.359 xx (9 4. 15) /( 1.175^(2)) + 0. 744 =1.85`.
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