JEE Mains · Chemistry · STD 12 - p -Block elements - ll
\(PCl _{5}\) is well known. but \(NCl _{5}\) is not. Because.
- A nitrogen is less reactive than phosphorous.
- B nitrogen doesn't have \(d-\)orbitals in its valence shell
- C catenation tendency is weaker in nitrogen than phosphorous.
- D size of phosphorous is larger than nitrogen.
Answer & Solution
Correct Answer
(B) nitrogen doesn't have \(d-\)orbitals in its valence shell
Step-by-step Solution
Detailed explanation
\(PCl _{5}\) forms five bonds by using the d-orbitals to "expand the octet". But \(NCl _{5}\) does not exist because there are no \(d\)-orbitals in the valence shell \(\left(2^{\text {nd }}\right.\) shell). Therefore there is no way to expand the octet.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- For the Balmer series in the spectrum of \(\mathrm{H}\) atom, \(\quad \bar{v}=R_{H}\left\{\frac{1}{n_{1}^{2}}-\frac{1}{n_{2}^{2}}\right\}, \quad\) the correct statements among \((I)\) to \((IV)\) are \((I)\) As wavelength decreases, the lines in the series converge \((II)\) The integer \(n_{1}\) is equal to \(2\) \((III)\) The lines of longest wavelength corresponds to \(\mathrm{n}_{2}=3\) \((IV)\) The ionization energy of hydrogen can be calculated from wave number of these linesJEE Mains 2020 Hard
- The successive 5 ionisation energies of an element are \(800,2427,3658,25024\) and \(32824 \mathrm{~kJ} / \mathrm{mol}\), respectively. By using the above values predict the group in which the above element is present :JEE Mains 2025 Easy
- The correct increasing order of stability of the complexes based on \(\Delta_{\mathrm{o}}\) value is _______.
I. \(\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}\)
II. \(\left[\mathrm{Co}(\mathrm{CN})_6\right]^{4-}\)
III. \(\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}\)
IV. \(\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}\)JEE Mains 2025 Medium - In an estimation of sulphur by Carius method \(0.2\) g of the substance gave \(0.6\) g of BaSO\(_4\). The percentage of sulphur in the substance is _____ %.
(Given molar mass in g mol\(^{-1}\) S : \(32\), BaSO\(_4\) : \(233\))JEE Mains 2026 Easy - The number of possible isomeric products formed when \(3-\)chloro\(-1-\)butene reacts with \(HCl\) through carbocation formation is \(.............\).JEE Mains 2023 Medium
- The Spin only magnetic moment value of square planar complex \(\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}\left(\mathrm{NH}_2 \mathrm{CH}_3\right)\right] \mathrm{Cl}\) is \(B.M.\) (Nearest integer) (Given atomic number for \(\mathrm{Pt}=78\)JEE Mains 2024 Hard
More PYQs from JEE Mains
- Decomposition of a hydrocarbon follows the equation \(k = (5.5 \times 10^{11}\,\text{s}^{-1})\,e^{\frac{-28000\,\text{K}}{T}}\). The activation energy of reaction is __________ kJ mol\(^{-1}\). (Nearest Integer) Given : R \(= 8.3\) J K\(^{-1}\) mol\(^{-1}\)JEE Mains 2026 Easy
- A plane electromagnetic wave propagating in \(\mathrm{x}\)-direction is described by \(\mathrm{E}_{\mathrm{y}}=\left(200\ \mathrm{Vm}^{-1}\right) \sin \left[1.5 \times 10^7 \mathrm{t}-0.05\ \mathrm{x}\right] \text {; }\) The intensity of the wave is :(Use \(\epsilon_0=8.85 \times 10^{-12} \mathrm{C}^2 \mathrm{~N}^{-1} \mathrm{~m}^{-2}\) )JEE Mains 2024 Hard
- If the net electric field at point \(\mathrm{P}\) along \(\mathrm{Y}\) axis is zero, then the ratio of \(\left|\frac{q_2}{q_3}\right|\) is \(\frac{8}{5 \sqrt{x}}\), where \(\mathrm{x}=\) _______.
JEE Mains 2024 Hard - In a conductor, if the number of conduction electrons per unit volume is \(8.5 \times 10^{28}\, m^{-3}\) and mean free time is \(25\,fs\) (femto second), its approximate resistivity is \(\left( {{m_e} = 9.1 \times {{10}^{ - 31}}\,kg} \right)\)JEE Mains 2019 Medium
- Let \( (2\alpha, \alpha) \) be the largest interval in which the function \( f(t)=\frac{|t+1|}{t^{2}}, t<0 \), is strictly decreasing. Then the local maximum value of the function \( g(x)=2\log_{e}(x-2)+\alpha x^{2}+4x-\alpha, x>2 \), isJEE Mains 2026 Medium
- When two resistance \(R_1\) and \(R_2\) connected in series and introduced into the left gap of a meter bridge and a resistance of \(10 \Omega\) is introduced into the right gap, a null point is found at \(60 cm\) from left side. When \(R_1\) and \(R_2\) are connected in parallel and introduced into the left gap, a resistance of \(3 \Omega\) is introduced into the right-gap to get null point at 40 cm from left end. The product of \(R_1 R_2\) is \(.............\Omega\)JEE Mains 2023 Hard