Structure of Atoms

Find out the number of following orders which are INCORRECT against the mentioned properties:

(i) Ortho hydrogen > Para hydrogen (Stability at low temperature)

(ii) Ethanol > Glycerol (Viscosity)

(iii) D₂ < He (Boiling point)

(iv) HF > H₂O (Melting point)

(v) H₃BO₃ > BF₃ (Melting point)

(vi) NH₃ < SbH₃ (Boiling point)

(vii) H₂O₂ > H₂O (Strength of hydrogen bond)

(viii) H₂O < D₂O (Freezing point)

(ix) $H{F}_2^{\Theta }$  < HF (Strength of hydrogen bond)

(x) D₂O < H₂O (Bond energy)

Consider the following reaction:
(A substituted phenol reacts with H? and CrO?Cl to produce product 'P'.)
The product 'P' gives positive acetyl chloride test. This is because of the presence of which of these –OH group(s)?

The number of radial land angular nodes in 4d orbital are, respectively

The spin-only magnetic moment value of species is________* 10^-2 BM. (Nearest integer)

[Given:   $\sqrt[]{3}=1.73]$

Which of the following relation is not correct?

Identify the incorrect statement from the following.

Consider the following pairs of electrons

(a) $n=3,\mathcal{l}=1,m_{\mathcal{l}}=1,m_s=+\frac{1}{2}$

(b) $n=3,\mathcal{l}=2,m_{\mathcal{l}}=1,m_s=+\frac{1}{2}$

(a) $n=3,\mathcal{l}=2,m_{\mathcal{l}}=-2,m_s=-\frac{1}{2}$ ${}_{}{}_{}\frac{}{}$

(b) $n=3,\mathcal{l}=2,m_{\mathcal{l}}=-1,m_s=-\frac{1}{2}$

(a) ${}_{}{}_{}\frac{}{}$ $n=4,\mathcal{l}=2,m_{\mathcal{l}}=2,m_s=+\frac{1}{2}$

(b) $n=3,\mathcal{l}=2,m_{\mathcal{l}}=-2,m_s=+\frac{1}{2}$

The pairs of electrons present in degenerate orbitals is/are :

Which of the following is the correct plot for the probability density ${\psi }^2\left(r\right)$ ${}^{}$ as a function of distance 'r' of the electron from the nucleus for 2s orbital?

The region in the electromagnetic spectrum where the Balmer series lines appear is:

The shortest wavelength of $\mathrm{H}$ atom in the Lyman series is ${\lambda }_1$ . The longest wavelength in the Balmer Series of ${\mathrm{H}}^{+}$ is: