Doubtnut is better on App. Therefore, you should NEVER use sp3d or sp3d2 to "explain" … Which of the following is/are not known… Answered Whywhy PCL5 is known and NCL 5 is not known 1 See answer sonu11479 is waiting for your help. NCl5 does not exist because there are no d-orbitals in the second energy level. New questions in Chemistry. To calculate an unknown resistance with the help of a meter bridge why is it advised to change the gap with the known and unknown resistance? Or Nitrogen does not form pentahalide. Also species in the second period have to follow the octet rule when bonding whenever possible. Phosphorus forms PCl 5 due to availability of vacant d-orbital though white P can extend its oxidation state but this is not applicable in case of N due to unavailability of d-orbitals. 3. In the olden days it was said that PCl5 could form and NCl5 couldn't because nitrogen had no empty d-orbitals (no such thing as a 2d orbital) with which to form hybrid orbitals. Explain whether the calculated Z* is … `SF_(6)` is known but `SC_(6)` is not. Therefore, PCl5 splits up into more stable octahedral and tetrahedral structures. Phosphorous has d-orbitals and hence can accommodate the electrons from Cl into them, Incase of N the d-orbitals are absent and electrons can be accommodated only in p- ornitals. More Related Question & Answers. Physics. Share 3. Pcl5 is known but ncl5 is not known? (c) Fluorine exhibits only -1 oxidation state whereas other halogens exhibit +1, +3, +5 and +7 oxidation state. Hence, it can form maximum of four bonds and cannot form pentahalides. Q- PCl5 is known but NCl5 is now known. Which are stable than trigonal bipyramidal. Posted on January 11, 2021 by January 11, 2021 by Therefore there is no way to arrange five pairs of … Why PCl5 is used in organic rections than NCl5? … Someone whose death certificate lists COVID-19 as a cause of death or significant condition contributing to death, but who did not receive a molecular amplification detection test is considered a probable case. Sketch and name the two different shapes that this molecule may have. Share 3. Ask for details ; Follow Report by Sruthi8052 11.03.2020 Log in to add a comment PCl5 forms five bonds by using the d-orbitals to "expand the octet" and have more "places" to put bonding pairs of electrons. What is product obtained when N2O5 is treated with NaCl? Asked by Wiki User. Explain the following: a. PCl 5 is a stable molecule, but NCl 5 is not.. b. SF 4 and SF 6 are known, but OF 4 and OF 6 are not. 3) Explain how for Cu the electronic configuration is not [Ar]4s2, 3d9, but the correct one is, [Ar]4s13d10: 4)Use Slater's rules to determine S and Z* for: (a) An electron in the 2p of O2-, F-, Na+, and Mg2+. `PCl_(5)` is known but `NCl_(5)` is not known. PCl5 forms five bonds by using the d-orbitals to "expand the octet" and have more "places" to put bonding pairs of electrons. On the other hand, P has vacant d-orbitals in its outermost shell and therefore, can extend its octet. Relative polarities _____ Explanation _____ _____ _____ (2) (g) A third TLC experiment was carried out using 1,2‑dinitrobenzene. Pentahalides of phosphorus are known, but not … Bhriti182 Bhriti182 Phosphorous has d-orbitals and hence can accommodate the electrons from Cl into them, Incase of N the d-orbitals are absent and electrons can be accommodated only in p- ornitals. (b) Out of noble gases, only Xenon is known to form real chemical compounds. Therefore, pentahalides of P are formed e.g. ←Full Sourdough Class May 8th 2021 in Bethania Qld. Note Inert pair effect : Due to poor shielding effect of intervening d and/ or f–electrons, the effective nuclear charge is increased. (ii) PCl 5 is known but NCl 5 is not known. Why pcl5 is stable molecule while ncl5 is not? PCl5 exists as [PCl4]+[PCl6]- in the solid state, the former of which acts as a Lewis acid and is therefore electrophilic. Chemical bond Chemical Bond: A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. Draw Lewis structures … The outermost shell of nitrogen does not contain d-orbitals and therefore, nitrogen cannot extend its octet. After watching this video, you will be able to explain what a compound is, identify compounds versus regular molecules, and describe the two types of … The first can hold two … See more. Books. Be the first to answer! 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