1

JEE Main 2021 (Online) 20th July Morning Shift

Numerical

+4

-1

The Azimuthal quantum number for the valence electrons of Ga

(Atomic number of Ga = 31)

^{+}ion is ___________.(Atomic number of Ga = 31)

Your input ____

2

JEE Main 2021 (Online) 17th March Morning Shift

Numerical

+4

-1

A certain orbital has n = 4 and m

_{L}= $$-$$3. The number of radial nodes in this orbital is ____________. (Round off to the Nearest Integer).Your input ____

3

JEE Main 2021 (Online) 16th March Evening Shift

Numerical

+4

-1

The number of orbitals with n = 5, m

_{1}= +2 is ___________. (Round off to the Nearest Integer).Your input ____

4

JEE Main 2021 (Online) 16th March Morning Shift

Numerical

+4

-1

When light of wavelength 248 nm falls on a metal of threshold energy 3.0 eV, the de-Broglie wavelength of emitted electrons is _______$$\mathop A\limits^o $$. (Round off to the Nearest Integer).

[ Use : $$\sqrt 3 $$ = 1.73, h = 6.63 $$\times$$ 10

m

[ Use : $$\sqrt 3 $$ = 1.73, h = 6.63 $$\times$$ 10

^{$$-$$34}Jsm

_{e}= 9.1 $$\times$$ 10^{$$-$$31}kg; c = 3.0 $$\times$$ 10^{8}ms^{$$-$$1}; 1eV = 1.6 $$\times$$ 10^{$$-$$19}J]Your input ____

Questions Asked from Structure of Atom (Numerical)

Number in Brackets after Paper Indicates No. of Questions

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