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Atreya
Subject: Chemistry
, asked on 11/5/18
11th one please fast is it correct ??if wrong could u provide the answer
Answer
3
Ranak Sharma
Subject: Chemistry
, asked on 6/5/18
(i)Calculate the wavenumber for the longest wavelength transition in the Balmer series of atomic
hydrogen.
Answer
1
Ranak Sharma
Subject: Chemistry
, asked on 6/5/18
Name the series of lines in emission spectrum of hydrogen that is obtained due to electronic transition
from outer orbits to second orbit.
Answer
2
अर्कज ..
Subject: Chemistry
, asked on 3/5/18
Solve this:
Answer
1
अर्कज ..
Subject: Chemistry
, asked on 3/5/18
Solve this:
Answer
1
Atreya
Subject: Chemistry
, asked on 1/5/18
Can you define quantisation of energy in chemistry?
Answer
1
Arvind
Subject: Chemistry
, asked on 30/4/18
Experts, plz help me solve this question...
Calculate the energy, frequency and wavelength of a radiation when an electron makes a transition in He
2+
from third shell to the first shell [ c = 3
×
10
8
m/s]
Answer
1
Prabhuti
Subject: Chemistry
, asked on 28/4/18
What will be (m/sec)/Hz??
Answer
3
Akash
Subject: Chemistry
, asked on 25/4/18
calculate the frequency of infra red radiation having wavelength 3*10^6nm
Answer
2
Akash
Subject: Chemistry
, asked on 25/4/18
calculate the frequency of infra red radiation having wavelength 3*10^6
Answer
1
Tani
Subject: Chemistry
, asked on 25/4/18
Plz explain and ans this
Q.3. The photoelectric emission requires a threshold frequency
v
0
. For a certain metal
λ
1
= 2200 Å and
λ
2
= 1900 Å produce electrons with a maximum kinetic energy
K
.
E
.
1
a
n
d
K
.
E
.
2
, if
K
.
E
.
2
=
2
K
.
E
.
1
, calculate
v
0
and corresponding
λ
0
.
Answer
1
Ms Eccentric
Subject: Chemistry
, asked on 24/4/18
Why do the characteristics of cathode rays does not depend upon the material of electrode? Please do not provide any links or hints.
Answer
1
Deisha Gupta
Subject: Chemistry
, asked on 23/4/18
Calculate density of NH3 at 30degreeC and 5atm pressure
Answer
1
Shreya Choudhary
Subject: Chemistry
, asked on 20/4/18
Solve this:
Example 74.
The density of crystalline sodium chloride is 2.165 g cm
-3
. What is the edge length of the unit cell. What would be the dimensions of cube containing one mole of Nacl?
Answer
1
Champ Jee
Subject: Chemistry
, asked on 14/4/18
The maximum number of electron having
n × l × m
= 0 in Zn
2
+
is equal to the-
(A) Atomic number of Mg
(B) 12
(C) Total number of electron in Zn which have
n + l
= 0
(D) '
p
' electrons in Ar
Answer
1
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What are you looking for?
hydrogen.
from outer orbits to second orbit.
Calculate the energy, frequency and wavelength of a radiation when an electron makes a transition in He2+ from third shell to the first shell [ c = 3 108 m/s]
Q.3. The photoelectric emission requires a threshold frequency . For a certain metal = 2200 Å and = 1900 Å produce electrons with a maximum kinetic energy , if , calculate and corresponding .
Example 74. The density of crystalline sodium chloride is 2.165 g cm-3. What is the edge length of the unit cell. What would be the dimensions of cube containing one mole of Nacl?
(A) Atomic number of Mg
(B) 12
(C) Total number of electron in Zn which have n + l = 0
(D) 'p' electrons in Ar