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How many protons and neutrons are present in the following nuclei    

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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 Θ  < HF (Strength of hydrogen bond)

(x) D2O < H2O (Bond energy)
V
Vishal Baghel

Kindly go through the answers

(7.00)

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)?
R
Raj Pandey

Kindly consider the following Image 

 

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

In 4d orbital, n = 4 and l=2

Radial nodes = n−l−1

Radial nodes = 4 – 2 – 1 = 1

And angular nodes,  l=2

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

[Given:   3 = 1 . 7 3 ]

A
alok kumar singh

B 2 + → σ 1 s 2 s * 1 s 2 σ 2 s 2 σ * 2 s 2 π 2 p 1  

Here, number of unpaired electrons, n = 1

Spin only moment ;    μ = n ( n + 2 ) B . M

= 173 × 10-2 B.M

 

Which of the following relation is not correct?
V
Vishal Baghel

Δ H = Δ U + Δ ( P V )

= Δ U + P Δ V + V Δ P

= Δ U + P Δ V   (At constant pressure)

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