The correct option with respect to the metal-metal distance (d) and the magnetic property of [Cr2Cl9]3- (A) and [W2Cl9] 3- (B) is
1
dcr... Cr > dw... w; A is paramagnetic and B is diamagnetic
2
dcr... Cr > dw... w; A is diamagnetic and B is paramagnetic
3
dw... w > dcr... Cr A is diamagnetic and B is paramagnetic
4
dw... w > dcr... Cr A is paramagnetic and B is diamagnetic