COMEDK 2024 Evening Shift | Atomic Structure Question 1 | Chemistry

What is the wave number (Units $$\mathrm{cm}^{-1}$$) of the longest wave length transition in the Balmer series of Hydrogen spectrum? $$Z=1 \text { for } H$$

27419.6

15233

39605.6

1354

COMEDK 2024 Evening Shift

MCQ (Single Correct Answer)

-0

What are the Principal & Azimuthal quantum number values of the valence electrons in tripositive Lutetium?

$$ \mathrm{n}=4 \quad \& \quad 1=2 $$

$$ \mathrm{n}=5 \quad \& \quad 1=2 $$

$$ \mathrm{n}=5 \quad \& \quad 1=3 $$

$$ n=4 \quad \& \quad 1=3 $$

COMEDK 2024 Morning Shift

MCQ (Single Correct Answer)

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A statement of Assertion followed by a statement of Reason is given. Choose the correct answer out of the following options.

Assertion : Energy of $$2 \mathrm{~s}$$ orbital of Hydrogen is less than the energy of the $$2 \mathrm{~s}$$ orbital of Lithium.

Reason : Energies of orbitals in the same subshell decrease with increase in atomic number.

Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

Assertion is correct but Reason is incorrect statement.

Assertion is incorrect but Reason is correct statement.

Both Assertion and Reason are incorrect statements.

COMEDK 2024 Morning Shift

MCQ (Single Correct Answer)

-0

Given below are 4 subatomic particles travelling with the same velocity "v". Which of them will have the shortest wavelength?

$$[A]=\text { Proton }[B]=\text { Neutron. }[C]=\text { Alpha particle. }[D]=\text { Electron. }$$

[B]

[D]

[C]

[A]

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