1
JEE Advanced 2017 Paper 1 Offline
Numerical
+3
-0
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Among $${H_2},H{e_2}^ + ,L{i_2},$$ $$B{e_2},{B_2},{C_2},{N_2},O_2^ - $$ and $${F_2},$$ the number of diamagnetic species is

(Atomic numbers : $$H = 1,He = 2,$$ $$Li = 3,Be = 4,$$ $$B = 5,C = 6,$$ $$N = 7,$$ $$O = 8,F = 9$$)
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2
JEE Advanced 2015 Paper 1 Offline
Numerical
+4
-0
Among the triatomic molecules/ions, BeCl2, $$N_3^-$$, N2O, $$NO_2^+$$, O3, SCl2, $$ICl_2^-$$, $$I_3^-$$ and XeF2, the total number of linear molecule(s)/ion(s) where the hybridization of the central atom does not have contribution from the d-orbital(s) is

[Atomic number: S = 16, Cl = 17, I = 53 and Xe = 54]
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3
JEE Advanced 2014 Paper 1 Offline
Numerical
+3
-0
A list of species having the formula XZ4 is given below.

XeF4, SF4 ,SiF4, $$BF_4^-$$, $$BrF_4^-$$, [Cu(NH3)4]2+, [FeCl4]2-, [CoCl4]2- and [PtCl4]2-

Defining shape on the basis of the location of X and Z atoms, the total number of species having a square planar shape is
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4
IIT-JEE 2010 Paper 1 Offline
Numerical
+4
-0
Based on VSEPR theory, the number of 90 degree F-Br-F angles in BrF5 is
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