1
JEE Main 2019 (Online) 10th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The ground state energy of hydrogen atom is – 13.6 eV. The energy of second excited state of He+ ion in eV is :
A
$$-$$ 6.04
B
$$-$$ 54.4
C
$$-$$ 27.2
D
$$-$$ 3.4
2
JEE Main 2019 (Online) 10th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the graphs shown below does not represent the relationship between incident light and the electron ejected from metal surface ?
A
JEE Main 2019 (Online) 10th January Morning Slot Chemistry - Structure of Atom Question 135 English Option 1
B
JEE Main 2019 (Online) 10th January Morning Slot Chemistry - Structure of Atom Question 135 English Option 2
C
JEE Main 2019 (Online) 10th January Morning Slot Chemistry - Structure of Atom Question 135 English Option 3
D
JEE Main 2019 (Online) 10th January Morning Slot Chemistry - Structure of Atom Question 135 English Option 4
3
JEE Main 2019 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following combination of statements is true regarding the interpretation of the atomic orbitals ?

(a) An electron in an orbital of high angular momentum stays away from the nucleus than an electron in the orbital of lower angular momentum.

(b) For a given value of the principal quantum number, the size of the orbit is inversely proportional to the azimuthal quantum number.

(c) According to wave mechanics, the ground state angular momentum is equal to $${h \over {2\pi }}$$.

(d) The plot of $$\psi $$ vs r for various azimuthal quantum numbers, shows peak shifting towards higher r value.
A
(a), (b)
B
(a), (d)
C
(b), (c)
D
(a), (c)
4
JEE Main 2019 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The highest value of the calculated spin only magnetic moment (in BM) among all the transition metal complexes is :
A
5.92
B
6.93
C
3.87
D
4.90
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