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JEE Main 2021 (Online) 18th March Morning Shift
Numerical
+4
-1
AX is a covalent diatomic molecule where A and X are second row elements of periodic table. Based on Molecular orbital theory, the bond order of AX is 2.5. The total number of electrons in AX is __________. (Round off to the Nearest Integer).
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2
JEE Main 2021 (Online) 25th February Morning Slot
Numerical
+4
-1
Among the following, the number of halide(s) which is/are inert to hydrolysis is _________.

(A) BF3

(B) SiCl4

(C) PCl5

(D) SF6
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3
JEE Main 2020 (Online) 6th September Morning Slot
Numerical
+4
-0
The number of Cl = O bonds in perchloric acid is, "________".
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4
JEE Main 2020 (Online) 9th January Evening Slot
Numerical
+4
-0
The sum of the total number of bonds between chromium and oxygen atoms in chromate and dichromate ions is ____________.
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