Table of Contents
Why is NH3 more reactive?
Because in NH3 the Electronegativity of nitrogen atom is more than hydrogen atom so , the dipole direction is from hydrogen to nitrogen and lone pair too have dipole parallel to all the dipoles of N and H atoms .
Why NH3 is stronger than PH3?
Due to smaller atomic size the density of lone pair electrons on N in NH3 is larger than that of P in PH3. So, NH3 is a stronger Lewis base than that of PH3.
Why is NH3 a better nucleophile than PH3?
The smaller the shell more is the strength of bond formed. Hence, L-shell forms stronger bond after donating lone pair of electrons compared to that of P-atom. Hence, NH3 is better electron donor than PH3. The conjugate base is always a better nucleophile”.
Why NH3 is basic while PH3 is feebly basic?
NH3 is distinctly basic while BiH3 is feebly basic. Nitrogen has a small size due to which the lone pair of electrons is concentrated in a small region. This means that the charge density per unit volume is high. while ‘BiH3 is only feebly basic.
Why does NH3 form hydrogen bond but PH3 does not?
Nitrogen is highly electronegative as compared to phosphorus. This causes a greater attraction of electrons towards nitrogen in NH3 than towards phosphorus in PH3. Hence the extent of hydrogen bonding in PH3 is very less as compared to NH3.
What is the difference between NH3 and PH3?
(A) Between NH3 and PH3, NH3 is a better electron donor because the lone pair of electrons occupies spherical ‘s’ orbital and is less directional. Sol: Ans [C] NH3 is better electron donor, and the lone pair is present in sp3 hybrid orbital. 66. White phosphorous on reaction with NaOH gives PH3 as one of the products.
Which one is more acidic NH3 or PH3?
PH3 is more basic than NH3 .
Why NH3 is more stable than BiH3?
In NH3 hydrogen is bonded with the nitrogen atom by hydrogen bonding which is very stronger as compared to bond in BiH3 so NH3 has higher thermal stability than BiH3.
Which is more stable NH3 or BiH3?
Due to presence of lone pair of electron, the hydrides of these elements are basic (Lewis Bases) in nature. Hence, with the increases in size, the increase in size, the stability of hydrides decreases and their reducing character increases. …
Why is NH3 more basic than BiH3?
Why is NH3 a base but PH3 is not?
is a base due to the lone pair of electrons present on the Nitrogen atom which is available for donation. On the other hand PH 3 is also a base but its basic character is less than that of NH 3 because the nitrogen in phosphorous have lone pair of electrons that are not readily available for donation.
What is the difference between N H 3 and P H 3?
is a base due to the lone pair of electrons present on the Nitrogen atom which is available for donation. On the other hand P H 3 is also a base but its basic character is less than that of N H 3 because the nitrogen in phosphorous have lone pair of electrons that are not readily available for donation.
Why is the N-H bond in NH3 highly polar?
The N-H bond in NH3 is highly polar because the electronegativity of N is greater than H. Due to presence of polar N-H bonds, NH3 forms intermolecular H-bonds. The strong H-bond makes NH3 very stable and thus it is less reactive. Nitrogen is more electronegative than Phosphorus.
Why does NH3 have a higher inversion barrier than PH3?
The higher the energy barrier , the lower is the frequency of vibration. The energy barrier is estimated to be about 24.7 kJ/mol for NH3 and 155 kJ/mol for PH3 resulting in the frequency of vibration for NH3 being about 4000 times higher than that for PH3. We can understand the higher inversion barrier for PH3 than that for NH3 as follows.