1
JEE Main 2023 (Online) 29th January Evening Shift
Numerical
+4
-1
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Total number of acidic oxides among

$$\mathrm{N_2O_3,NO_2,N_2O,Cl_2O_7,SO_2,CO,CaO,Na_2O}$$ and $$\mathrm{NO}$$ is ____________.

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2
JEE Main 2021 (Online) 27th August Morning Shift
Numerical
+4
-1
The number of f electrons in the ground state electronic configuration of Np (Z = 93) is ___________. (Nearest integer)
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3
JEE Main 2021 (Online) 26th August Morning Shift
Numerical
+4
-1
These are physical properties of an element

(A) Sublimation enthalpy

(B) Ionisation enthalpy

(C) Hydration enthalpy

(D) Electron gain enthalpy

The total number of above properties that affect the reduction potential is ____________ (Integer answer)
Your input ____
4
JEE Main 2021 (Online) 26th August Morning Shift
Numerical
+4
-1
The number of 4f electrons in the ground statement electronic configuration of Gd2+ is ___________. [Atomic number of Gd = 64]
Your input ____
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