1
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
If the shortest wavelength in Lyman series of hydrogen atom is A, then the longest wavelength in Paschen series of He+ is :
A
$${{5A} \over 9}$$
B
$${{9A} \over 5}$$
C
$${{36A} \over 5}$$
D
$${{36A} \over 7}$$
2
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
sp3d2 hybridization is not displayed by :
A
BrF5
B
SF6
C
[CrF6]3$$-$$
D
PF5
3
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The pair of compounds having metals in their highest oxidation state is :
A
MnO2 and CrO2Cl2
B
[NiCl4]2$$-$$ and [CoCl4]2$$-$$
C
[Fe(CN)6]3$$-$$ and [Cu(CN)4]2$$-$$
D
[FeCl4]$$-$$ and Co2O3
4
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following is paramagnetic ?
A
NO+
B
CO
C
$$O_2^{2 - }$$
D
B2
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