TG EAPCET 2024 (Online) 9th May Morning Shift | Atomic Structure Question 8 | Chemistry

Identify the pair of species having same energy from the following. (The number given in the bracket corresponds to principal quantum number ( $n$ ) in which the electron is present.)

$\mathrm{H}(n=1) . \mathrm{L}^{2+}(n=1)$

$\mathrm{L}^{2+}(n=3), \mathrm{Be}^{3+}(n=4)$

$\mathrm{He}^{+}(n=1), \mathrm{Li}^{2+}(n=3)$

$\mathrm{H}(n=3), \mathrm{Li}^{2+}(n=3)$

TG EAPCET 2024 (Online) 9th May Morning Shift

MCQ (Single Correct Answer)

-0

Which one of the following corresponds to the wavelength of line spectrum of H atom in its Balmer series ? ( $R=$ Rydberg constant)

$\frac{9}{8 R}$

$\frac{100}{21 R}$

$\frac{25}{24 R}$

$\frac{16}{15 R}$

TS EAMCET 2023 (Online) 12th May Evening Shift

MCQ (Single Correct Answer)

-0

The wavelength of second line of Balmer series of hydrogen atom is $\lambda \mathrm{nm}$. What is the wavelength of first line of Lyman series of $\mathrm{He}^{+}$ion (in nm )?

$\lambda / 16$

$16 / \lambda$

$16 / 3 \lambda$

$3 \lambda / 16$

TS EAMCET 2023 (Online) 12th May Evening Shift

MCQ (Single Correct Answer)

-0

Consider the following.

I. The electron spin quantum number describes the orientation of the spin of the nucleus with respect to the magnetic field.

II. The orbitals represented by the quantum numbers $n=3, l=2, m=+2$ and $n=3, l=2, m=-2$ have the same energy.

III. The energy of a photon is directly proportional to wavelength but inversely proportional to wave number.

IV. Lyman series of lines appear in ultra-violet region.

The correct statements are

II and IV only

I and II only

II, III and IV only

I, III and IV only

PREVIOUS NEXT

TS EAMCET Subjects