86. Zeff of boron is x then zeff of oxygen will be- (1) x-0.65 (2) x+0.65 (3) x+1.30 (4) x+1.95

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B e

Z_{e f f} = 1.95

B e^{x +}, Z_{e f f} = 2.30

If the $Z_{e f f}$ of cubes a, b and c is x, y and z respectively, find xyz. (For instance if x = 2, y = 3, z = 5, xyz = 235)

X	$- 3$	$- 1$	$0$	$1$	$3$	$5$	$7$	$9$
$F (x)$	$0.1$	$0.3$	$0.5$	$0.65$	$0.75$	$0.85$	$0.90$	$1$

P (X = - 3 / X < 0)

X	$- 3$	$- 1$	$0$	$1$	$3$	$5$	$7$	$9$
$F (x)$	$0.1$	$0.3$	$0.5$	$0.65$	$0.75$	$0.85$	$0.90$	$1$

P (X \leq 3 / X > 0)

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