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Yashi Mishra
Subject: Chemistry
, asked on 31/1/18
Name all elements that form neutral oxides
Answer
1
Yashi Mishra
Subject: Chemistry
, asked on 31/1/18
Name all elements tgat form amphoteric oxodes
Answer
1
Yashi Mishra
Subject: Chemistry
, asked on 31/1/18
W
h
i
c
h
o
f
t
h
e
f
o
l
l
o
w
i
n
g
s
h
o
w
s
d
i
a
g
o
n
a
l
r
e
l
a
t
i
o
n
s
h
i
p
?
1
B
o
r
o
n
a
n
d
S
i
l
i
c
o
n
2
B
o
r
o
n
a
n
d
A
l
u
m
i
n
u
m
2
B
o
r
o
n
a
n
d
g
a
l
l
i
u
m
4
B
o
r
o
n
a
n
d
C
a
r
b
o
n
Answer
2
Yashi Mishra
Subject: Chemistry
, asked on 31/1/18
Which elements form amphoteric oxides
Answer
2
Yashi Mishra
Subject: Chemistry
, asked on 30/1/18
Why o- has very high electron gain enthalpy
Answer
1
Nidhi
Subject: Chemistry
, asked on 29/12/17
General electronicconfigurationof lanthnides
Answer
2
Allan Cyril
Subject: Chemistry
, asked on 24/10/17
assugn the position od element having outer electronic configuration ns2 np2 for n=5
Answer
1
Rajib
Subject: Chemistry
, asked on 20/10/17
Nitrogen and phosphorus both have half filled orbitals,then why is electron gain enthalpy of phosphorus negative while nitrogen is positive?
Answer
3
Allan Cyril
Subject: Chemistry
, asked on 19/10/17
Ehat isthegroupand and periodofthe element with z=119
Answer
1
Nikita Sharma
Subject: Chemistry
, asked on 18/10/17
what is metallic core in metallic crystal?
Answer
1
Priyanshi
Subject: Chemistry
, asked on 13/10/17
In this type of Questions how to determine the size when both charge and periodic size is to be considered ? Explain the answer
Pick the correct order with reference to size.
A
)
C
a
2
+
<
K
+
<
A
r
<
S
2
-
<
C
l
-
B
)
C
a
2
+
<
K
+
<
A
r
<
C
l
-
<
S
2
-
C
)
C
a
2
+
<
A
r
<
K
+
<
C
l
-
<
S
2
-
D
)
A
r
<
C
a
2
+
<
K
+
<
C
l
-
<
S
2
-
Answer
2
Erw Trjerth
Subject: Chemistry
, asked on 4/10/17
Experts please answer
Q.Write the electronic configuration of
(i)
M
n
4
+
(ii)
C
u
2
+
Answer
1
Avika .
Subject: Chemistry
, asked on 30/9/17
Why sodium is not a "third alkali metal".
Answer
3
Kartik Agarwal
Subject: Chemistry
, asked on 30/9/17
Solve this:
20. Arrange the following in increasing order of property mentioned
(i) Mg, Mg
2+
Na and Na' (atomic/ionic radius)
(ii) Mg, Mg' , Na and Na' (ionisation enthalpy)
(iii) O,F, Cl, S (electron gain enthalpy)
Answer
2
Kartik Agarwal
Subject: Chemistry
, asked on 30/9/17
Solve this:
Answer
1
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What are you looking for?
Pick the correct order with reference to size.
Q.Write the electronic configuration of
(i)
(ii)
20. Arrange the following in increasing order of property mentioned
(i) Mg, Mg2+ Na and Na' (atomic/ionic radius)
(ii) Mg, Mg' , Na and Na' (ionisation enthalpy)
(iii) O,F, Cl, S (electron gain enthalpy)