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The standard heat of formation values of...

The standard heat of formation values of `SF_(6)(g), S(g)`, and `F(g)` are `-1100, 275`, and `80 kJ mol^(-1)`, respectively. Then the average `S-F` bond enegry in `SF_(6)`

A

309kJ

B

315kJ

C

320kJ

D

300kJ

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