NCERT Solutions
Board Paper Solutions
Ask & Answer
School Talk
Login
GET APP
Login
Create Account
Popular
Latest
Expert Answers
ALL
Champ Jee
Subject: Chemistry
, asked on 7/2/19
Q2.
Ans: B.
Help asap.
Answer
1
Kk Hardy
Subject: Chemistry
, asked on 1/12/18
Experts.......
I wanted to ask 12th question......
I cropped the pic but it didn't get crop......
Please explain that.........
Answer
1
Kk Hardy
Subject: Chemistry
, asked on 1/12/18
Experts........
Please help.........
Answer
1
Kk Hardy
Subject: Chemistry
, asked on 1/12/18
Experts.......
Please help.......
Answer
1
Champ Jee
Subject: Chemistry
, asked on 14/11/18
Q4.
Ans: D.
How? I got something else...
Answer
1
Champ Jee
Subject: Chemistry
, asked on 20/10/18
Ques in the pic.
Ans: option 4.
Answer
1
Champ Jee
Subject: Chemistry
, asked on 29/9/18
Q44.
Pls help asap.
Ans: option 1.
How?
Answer
1
Champ Jee
Subject: Chemistry
, asked on 10/9/18
Ans: option D.
How?
Answer
1
Suzanne
Subject: Chemistry
, asked on 26/8/18
Pls solve the 3sum
Answer
2
Champ Jee
Subject: Chemistry
, asked on 5/7/18
Q60.
Ans: ABC
How?
Answer
1
Champ Jee
Subject: Chemistry
, asked on 23/6/18
Option D.
Reverse in postivoely ions means?!
Answer
1
Champ Jee
Subject: Chemistry
, asked on 21/6/18
Ans is option c.
Why not option d?!
Answer
1
Champ Jee
Subject: Chemistry
, asked on 16/6/18
Which element in second period has maximum covalency?
Is it boron or carbon?
Answer
4
Champ Jee
Subject: Chemistry
, asked on 15/6/18
Q. Which of the following represent the correct order of acidic strength?
a
.
C
a
O
<
H
2
O
<
C
u
O
<
C
O
2
b
.
H
2
O
<
C
u
O
<
C
a
O
<
C
O
2
c
.
S
O
2
>
P
2
O
3
>
S
i
O
2
>
A
l
2
O
3
d
.
P
2
O
3
>
S
O
2
>
S
i
O
2
>
A
l
2
O
3
Answer
1
Champ Jee
Subject: Chemistry
, asked on 9/6/18
Ans : option c
How? Please explain each and every point.:
13. Carefully read the following four statements related to Slater's rule and identify them as True (T) or False (F).
I - Z
eff
value for the valence s-electron increases more rapidly, in moving left to right in a period, in 's' and 'p' block elements compared to d-block elements.
II - Z
eff
value for the outermost s-orbital of f-block elements, becomes constant irrespective of the number of (n-2)f - electrons and this contradicts f- contraction. This fact can be said to be a drawback of Slater's rule.
III -The Slater's rule does not take into account, the relative penetrating power of s and p-orbitals.
IV - In general, for the d-block elements of 3d-series, the value of Z
eff
increases by 0.65 unit per element.
(A) TFTF (B) TFFF (C) TTTF (D) FTTF
Answer
1
Prev
2
3
4
5
6
Next
What are you looking for?
Ans: B.
Help asap.
I wanted to ask 12th question......
I cropped the pic but it didn't get crop......
Please explain that.........
Please help.........
Please help.......
Ans: D.
How? I got something else...
Ans: option 4.
Pls help asap.
Ans: option 1.
How?
How?
Ans: ABC
How?
Reverse in postivoely ions means?!
Why not option d?!
Is it boron or carbon?
Q. Which of the following represent the correct order of acidic strength?
How? Please explain each and every point.:
13. Carefully read the following four statements related to Slater's rule and identify them as True (T) or False (F).
I - Zeff value for the valence s-electron increases more rapidly, in moving left to right in a period, in 's' and 'p' block elements compared to d-block elements.
II - Zeff value for the outermost s-orbital of f-block elements, becomes constant irrespective of the number of (n-2)f - electrons and this contradicts f- contraction. This fact can be said to be a drawback of Slater's rule.
III -The Slater's rule does not take into account, the relative penetrating power of s and p-orbitals.
IV - In general, for the d-block elements of 3d-series, the value of Zeff increases by 0.65 unit per element.
(A) TFTF (B) TFFF (C) TTTF (D) FTTF