IIT-JEE 1989 | Structure of Atom Question 63 | Chemistry

IIT-JEE 1989

MCQ (Single Correct Answer)

-0.25

The correct ground state electronic configuration of chromium atom is

[Ar] 3d⁵ 4s¹

[Ar] 3d⁴ 4s²

[Ar] 3d⁶ 4s⁰

[Ar] 4d⁵ 4s¹

IIT-JEE 1988

MCQ (Single Correct Answer)

-0.25

The triad of nuclei that is isotonic is

$${}_6^{14}C$$, $${}_7^{15}N$$, $${}_9^{17}C$$

$${}_6^{12}C$$, $${}_7^{14}N$$, $${}_9^{19}C$$

$${}_6^{14}C$$, $${}_7^{14}N$$, $${}_9^{17}C$$

$${}_6^{14}C$$, $${}_7^{14}N$$, $${}_9^{19}C$$

IIT-JEE 1988

MCQ (Single Correct Answer)

-0.25

The wavelength of a spectral line for an electronic transition is inversely related to :

The number of electrons undergoing the trasition

The nuclear charge of the atom

the difference in the energy of the energy levels involved in the transition

the velocity of the electron undergoing the transition

IIT-JEE 1988

MCQ (Single Correct Answer)

-0.25

The outermost electronic configuration of the most electronegative element is

ns² np³

ns² np⁴

ns² np⁵

ns² np⁶

JEE Advanced Subjects