1
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The electron in hydrogen atom undergoes transition from higher orbits to an orbit of radius 476.1 pm . This transition corresponds to which of the following series?

A

Lyman

B

Paschen

C

Balmer

D

Pfund

2
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the incorrect statement from the following?

A

$m$, designates the orientation of the orbital.

B

The probability density of electron is expressed by $|\psi|^3$.

C

The total information about electron in atom is stored in its $\psi$.

D

Total number of orbitals in a sub level is equal to $(2 l+1)$.

3
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Atomic numbers of three elements $E_1, E_2$ and $E_3$ of periodic table are $Z_1, 50$ and $Z_2$ respectively. From the position of the elements shown in figure, the values of $\left(Z_2-Z_1\right)$ is

TG EAPCET 2025 (Online) 2nd May Evening Shift Chemistry - Periodic Table and Periodicity Question 32 English
A

52

B

46

C

64

D

34

4
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Electron gain enthalpy values $\left(\Delta_{\mathrm{cg}} H\right)$ (in $\mathrm{kJ} \mathrm{mol}^{-1}$ ) of elements $X, Y$ and $Z$ are $-349,-200$ and -295 respectively. $X, Y$ and $Z$ are respectively

A

$\mathrm{Cl}, \mathrm{I}, \mathrm{S}$

B

$\mathrm{Cl}, \mathrm{S}, \mathrm{I}$

C

$\mathrm{S}, \mathrm{Se}, \mathrm{Te}$

D

$\mathrm{Na}, \mathrm{K}, \mathrm{Rb}$

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