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Champ Jee
Subject: Chemistry
, asked on 1/5/18
Why does atomic size of manganese, iron, cobalt and nickel remains constant whereas of scanidum, titanium, vanadium and chromium decreases?
Answer
1
Champ Jee
Subject: Chemistry
, asked on 1/5/18
What is lanthanoid contraction? Please explain.
And how it affects zirconium and hafnium sizes? Please.
Answer
1
Champ Jee
Subject: Chemistry
, asked on 1/5/18
Why does this happen?(R,r stands for radius). Please explain in an easy way.
I already have prior knowledge of s,p,d and f subshell and screening effect.
Thnx!
Q. Transition metals :
sc
Ti
v
cr
r
decreases
Mn
Fe
Co
Ni
R
=
constant
Answer
1
Samruddhi Amberkar
Subject: Chemistry
, asked on 15/8/17
Why is ionisation enthalpy a endothermic process?????
Answer
1
Sukanya Roy
Subject: Chemistry
, asked on 27/12/16
IUPAC does not recognise some functional groups and add them to the name as prefix instead of suffix, these are nitro, nitroso, cyno , bromo and so on and treated as subtituents. But in principle, they are truly functional groups. How many functional groups are treated as substituents?
Answer
3
Arundhati Bandyopadhyay
Subject: Chemistry
, asked on 8/12/16
how will you convert sodium ethanoate to butane
Answer
4
Shailly
Subject: Chemistry
, asked on 10/2/16
From the given part of periodic table giving reasons, explain the following: (a) Element A is a non metal. (b) Element D is more electronegative than E. (c) Which type of ion, cation or anion will be formed by element C ?
Answer
1
Pratiksha Ray
Subject: Chemistry
, asked on 19/11/15
Proof the diagonal relationship between Li and Mg
Be and Al
B and Si
Answer
1
Rupali Waghmare
Subject: Chemistry
, asked on 28/8/20
Out of sheer curiosity, "Which element is more toxic: Caesium or Polonium? And why?"
Answer
1
Uttkarsh Pawara
Subject: Chemistry
, asked on 29/3/20
Please give answer
With reason
Answer
1
Uttkarsh Pawara
Subject: Chemistry
, asked on 29/3/20
Please give answer?
give reason
Answer
1
Uttkarsh Pawara
Subject: Chemistry
, asked on 29/3/20
Please give answer???
with reason
Answer
1
Uttkarsh Pawara
Subject: Chemistry
, asked on 27/3/20
Please give answer???
Answer
3
Uttkarsh Pawara
Subject: Chemistry
, asked on 27/3/20
Please give answer??
Answer
1
Yuvraj Choudhary
Subject: Chemistry
, asked on 29/1/20
The equivalent weights of MnO4-?in acidic, basic and neutral medium are in the ratio ?
Answer
1
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What are you looking for?
And how it affects zirconium and hafnium sizes? Please.
I already have prior knowledge of s,p,d and f subshell and screening effect.
Thnx!
Q. Transition metals :
Proof the diagonal relationship between Li and Mg
Be and Al
B and Si
With reason
give reason
with reason