Which is the best electron pair donor?

Sol: Ans [C] NH3 is better electron donor, and the lone pair is present in sp3 hybrid orbital.

Why is P CH3 3 more nucleophilic than n33?

The CH3 groups in N(CH3)3 are much closer to one another than they are in P(CH3)3. The P electrons less hindered and an electrophile can approach them more easily.

Why is N more basic than P?

The electronegativity of the P atom is less than as compared with$N$, also the size of the$P$atom is bigger than that of N. hence the molecule $P{H_3}$ is less basic as compared with $N{H_3}$.

Why NH3 is better ligand 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.

Which molecule is an electron donor?

Petroleum hydrocarbons, less chlorinated solvents like vinyl chloride, soil organic matter, and reduced inorganic compounds are all compounds that can act as electron donors.

Which element is an electron donor?

Inorganic electron donors include hydrogen, carbon monoxide, ammonia, nitrite, sulfur, sulfide, and ferrous iron.

Which is more nucleophilic NH2 or CH3?

CH3- is more nucleophilic. Carbon is a smaller atom which means it will not hold a negative charge as well meaning CH3- is more reactive (more nucleophilic) than NH2-.

Which is more nucleophilic CH3 3P or CH3 3N?

Polar aprotic solvents can stabilize cations by ion-dipole interactions, but not anions (nucleophiles); thus nucleophiles are more free to react with electrophilic carbon atoms in polar aprotic solvents. (d) (CH3)3P or (CH3)3N (CH3)3P is more reactive than (CH3)3N, since P is larger and more polarizable than N.

Which lone pair is most basic?

ANSWER: The lone pairs on oxygen (a) are the most basic. Hint: Lone pairs on negatively charged atoms are usually more basic than lone pairs on neutral atoms.

Do electron donating groups increase basicity?

The basicity of an amine is increased by electron-donating groups and decreased by electron-withdrawing groups. Aryl amines are less basic than alkyl-substituted amines because some electron density provided by the nitrogen atom is distributed throughout the aromatic ring.

Why is PH3 stronger acid than NH3?

NH3 is more basic than PH3 because the size of P atom is larger than N atom. The electron density of N is more than P atom. The tendency to donate electrons will therefore be more for N atom than P atom. So, NH3 is more basic than PH3.

Which has more p character NH3 or PH3?

You can simply say that because nitrogen is more electronegative than phosphorus, thus PH3 > NH3.

Which is more electron donating group -OCH3 or -CH3?

Due to +R effect of -OCH3 group which arises due to the lone pair of oxygen atom,it become more electron donating group than -CH3 group where only +Ieffect is present. Always Resonence effect is stronger than Inductive effect except for halogen atom.

What is the lone pair of carbon in CH3?

Carbon has four valence electrons. Two valence electrons make a lone pair . In case of CH3 there is only one valence electron so that molecule as known as radical. Radical is the molecule having odd number of valence electrons. So there is no lone pair in CH3 ot is radical.

Why is NH3 a better electron donor than PH3?

Hence, NH3 is better electron donor than PH3. it has a very simole answer as DRAGO RULE in PH3 e pair is in pure s orbital while in NH3 it is in sp3 orbital so less s character easily available for donation Fast. Simple. Free. Get rid of typos, grammatical mistakes, and misused words with a single click. Try now. , Msc.

What is the difference between CH3O- and CH3-?

If both CH3- and CH3O- are attached to a conjugated ststem like double bond then CH3O- group will donate electron pair via resonance but CH3— will donate electron via inductive effect and hyperconjugation! If these groups are not attached to a conjugated ststem then order of electron releasing power will be different.