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Ms Eccentric
Subject: Chemistry
, asked on 18/5/18
the hydrogen atom is in the ground state is excited by the means of monochromatic radiation of wavelengt x Armstrong. The resulting spectrum consists of 15 different lines. Calculate the value of X.
Do not provide any links or hints. I had already seen *amit* Sir's explanation and I don't understand. So explain clearly.
Answer
2
Ms Eccentric
Subject: Chemistry
, asked on 18/5/18
The correct set of quantum numbers for the unpaired electrons of chlorine is ?
I know,
n = 3
But how l = 1 it should be 0,1 and 2 ?????
And how m = 1 , shouldn't it be +1,0,-1 ????
Please do not provide any links or hints.
Answer
1
अर्कज
Subject: Chemistry
, asked on 18/5/18
Explain:
Answer
3
अर्कज
Subject: Chemistry
, asked on 18/5/18
Solve this:
Answer
1
अर्कज
Subject: Chemistry
, asked on 18/5/18
Solve this:
Answer
1
अर्कज
Subject: Chemistry
, asked on 18/5/18
Solve this:
Answer
1
अर्कज
Subject: Chemistry
, asked on 18/5/18
Solve this:
Answer
2
अर्कज
Subject: Chemistry
, asked on 18/5/18
Solve this:
Answer
1
Pranjal Prajapati
Subject: Chemistry
, asked on 17/5/18
Calculate the mass % of different element present in Na
2
SO
4
?
determine the empirical of an oxide of iron which has 69.9% iron and 30.1% O
2
by mass?
A welding fuel gas contains carbon, hydrogen only. burning a sample of it in O
2
gives 3.30g carbon dioxide 6.690g WATER
and no other product. A volume of 10 liters ( at NTP)of this welding gas is found to weigh 11.6g. Calculate(a) Empirical formula (B) molecular formula (c) molecular mass of gas??
A photon of wavelength 4*10
-7
meter strike on a function of the metal being 2.13eV.Calculate (a) The energy of the photon. (b) the K.E. of emission. (c) The velocity of photoelectron ( GIVEN eV = 1.6020*10
-19
joule.?
Explain why are cations smaller and anions bigger in radius than the parent atom?
What is the basic difference in approach in Mendeleev and modern periodic law??
Answer
1
अर्कज
Subject: Chemistry
, asked on 17/5/18
Solve this:
Question No. 9
The elementary particle that moves around the nucleus in an atom
A. has a single negative charge
B. has a double positive charge
C. has a double negative charge
D. has a single positive charge
Answer
2
अर्कज
Subject: Chemistry
, asked on 17/5/18
Solve this:
Q. According to Rutherford, the entire mass and positive charge of an atom is confined to a
A. large volume at the centre called the photon
B. small volume at the centre called the nucleus
C. large volume at the centre called the proton
D. small volume at the centre called the neutron
Answer
3
अर्कज
Subject: Chemistry
, asked on 17/5/18
What is photon
Question No. 3
The constituent particles of an atom are
A. electrons and protons only
B. proton and neutrons only
C. protons, electrons, and neutrons
D. electrons, protons, neutrons, and photons
Answer
1
अर्कज
Subject: Chemistry
, asked on 17/5/18
Solve this:
Q. The part of atomic theory that came into light using Rutherford's experiment is a good scientific theory because
A. Rutherford obtained the results mentioned in his postulates
B. anyone who performs Rutherford's experiment will obtain the same results
C. its results can be restricted to the time when Rutherford performed the experiment
D. nobody, after Rutherford, will be able to perform the experiment again
Answer
3
अर्कज
Subject: Chemistry
, asked on 17/5/18
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Answer
2
अर्कज
Subject: Chemistry
, asked on 17/5/18
Solve this:
Q. Which of the following figures explains Rutherford's atomic model?
A.
B.
C.
Answer
2
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What are you looking for?
Do not provide any links or hints. I had already seen *amit* Sir's explanation and I don't understand. So explain clearly.
I know,
n = 3
But how l = 1 it should be 0,1 and 2 ?????
And how m = 1 , shouldn't it be +1,0,-1 ????
Please do not provide any links or hints.
Question No. 9
The elementary particle that moves around the nucleus in an atom
A. has a single negative charge
B. has a double positive charge
C. has a double negative charge
D. has a single positive charge
Q. According to Rutherford, the entire mass and positive charge of an atom is confined to a
A. large volume at the centre called the photon
B. small volume at the centre called the nucleus
C. large volume at the centre called the proton
D. small volume at the centre called the neutron
Question No. 3
The constituent particles of an atom are
A. electrons and protons only
B. proton and neutrons only
C. protons, electrons, and neutrons
D. electrons, protons, neutrons, and photons
Q. The part of atomic theory that came into light using Rutherford's experiment is a good scientific theory because
A. Rutherford obtained the results mentioned in his postulates
B. anyone who performs Rutherford's experiment will obtain the same results
C. its results can be restricted to the time when Rutherford performed the experiment
D. nobody, after Rutherford, will be able to perform the experiment again
Q. Which of the following figures explains Rutherford's atomic model?
A.
B.
C.