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  • 2 answers

Tripti Shah 6 years, 9 months ago

According to old concept it was 2,8,8,16, 32,32..... But according to new concept it is 1s2, 2s2 , 2p6 and it is a complete series known as afbau's principle by Afbau's principle.........☺ hope it may help u...

Vishal Yaduvanshi 6 years, 9 months ago

2,2,4,1
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Yogita Ingle 6 years, 9 months ago

Limitations of Bohr Atomic Model Theory

  • It violates the Heisenberg Uncertainty Principle. The Bohr atomic model theory considers electrons to have both a known radius and orbit i.e. known position and momentum at the same time, which is impossible according to Heisenberg.
  • The Bohr atomic model theory made correct predictions for smaller sized atoms like hydrogen, but poor spectral predictions are obtained when larger atoms are considered.
  • It failed to explain the Zeeman effect when the spectral line is split into several components in the presence of a magnetic field.
  • It failed to explain the Stark effect when the spectral line gets split up into fine lines in the presence of an electric field.
  • 2 answers

Shivshant Prasad 6 years, 9 months ago

Kp=[Kc]RT^∆ng

Shivam H¥Dra 6 years, 9 months ago

Bhai simple hai
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  • 1 answers

Meghna Sharma 6 years, 9 months ago

Catalyst is a. Substance which increase the rate of chemical reaction without itself undergoing any permanent chemical change.
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  • 2 answers

Aashir Arham ⚽?⚽ 6 years, 9 months ago

Meghna write answer is catalyst increases both forward and backward reaction so it overall affect is zero....?

Meghna Sharma 6 years, 9 months ago

Catalyst do not change the magnitude of the equilibrium constant because it only helps in attaining the equilibrium quickly. It is only made to fast up the reaction.
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Meghna Sharma 6 years, 9 months ago

According to Henry's law, the amount of gas dissolved in a given mass of solvent is directly proportional to the pressure.
  • 1 answers

Anisha Sharma 6 years, 10 months ago

[P+an²/v²][v-nb]=nrt
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Anmol Chauhan 6 years, 10 months ago

Size of Na+ is smaller than Na bcz z effect iss increased
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Tripti Shah 6 years, 10 months ago

Or negatively charged rays which attract to positive charge are cathode rays.

Tripti Shah 6 years, 10 months ago

The rays which move from negatively charged cathod to positively charged anode are known as cathod rays.
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  • 1 answers

Anisha Sharma 6 years, 10 months ago

The physical and chemical properties of an element are periodic function of their atomic number..
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  • 3 answers

Anisha Sharma 6 years, 10 months ago

What????..... Relation have to be discussed here.....

Pradeep Kumar Madhukar 6 years, 10 months ago

100 c

Anisha Sharma 6 years, 10 months ago

is there nobody who can answer this question??
  • 2 answers

Ishita Jain 6 years, 10 months ago

Up to downeffect

Meghna Sharma 6 years, 10 months ago

In case of liquids, intermolecular space is less as compared to gases so the vanderwaal forces are higher and hence gases diffuses quickly.
  • 1 answers

Meghna Sharma 6 years, 10 months ago

If a system is in equilibrium is subjected to the change in conc.,temp., pressure, then it will proceed in that direction which tends to undo the change imposed.
  • 2 answers

Anisha Sharma 6 years, 10 months ago

vanderwaal radius

Prashant Singh 6 years, 10 months ago

van der walls radius has longest radius.
  • 2 answers

Meghna Sharma 6 years, 10 months ago

Organic chemistry and hydrocarbons r very important and they both have a good weightage of nearly 20 marks

Hemant Tiwari 6 years, 10 months ago

Inert pair effect
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Tripti Shah 6 years, 10 months ago

But i need help in chemestry specialy in equilibrium .....

Hemant Tiwari 6 years, 10 months ago

Sis questions of kp,kc,ph and converting into benzene, aniline , phenol,acetophenon. And abnormal trends in p and s block and more

Garhwalli???? Nona 6 years, 10 months ago

It is chemistry not Chemestey. All ncert questions are most important.????
  • 1 answers

Hemant Tiwari 6 years, 10 months ago

Ozonolysis of ethene • Ethene on ozonolysis followed by the reaction with zinc dust and water, formaldehyde is formed. •Reduction of formaldehyde Formaldehyde on reduction by using lithium aluminum hydride followed by acid hydrolysis gives methanol
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Aashir Arham ⚽?⚽ 6 years, 10 months ago

Entropy,Enthalpy

Meghna Sharma 6 years, 10 months ago

Hess's law, gibbs free energy
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Hemant Tiwari 6 years, 10 months ago

Carbon is slightly more electronegative than hydrogen. Thus, carbon atom in an alkyl (say methyl) group has higher electron density around it as compared with an H atom.
  • 1 answers

Yogita Ingle 6 years, 10 months ago

Huckel’s rule is a theory which helps to determine if a planar ring molecule is aromatic or not. According to this rule, if a planar ring (cyclic) molecule has 4n + 2π electrons, then it is aromatic

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Gaurav Seth 6 years, 10 months ago

Structure of diamond: In diamond each carbon atom is tetrahedrally attached to four carbon atoms through four strong covalent bonds (Fig. 4.2).Thus no free electrons on carbon are left and all bonding electrons of the carbon atom are engaged. This strong covalent bonding in its structure makes it hardest natural substance and a non-conductor of electricity.

Properties and uses: 
(i) Diamond is a hard substance and because of this hardness, it is used for making glass cutters and rock borers for drilling.
(ii)    It has a high refractive index and is therefore used as a precious gem for making jewellery etc.
(iii)    It is non-conductor of heat and electricity.
(iv)    It is chemically unreactive.
(v)    It is used for precision thermometers because of its extra ordinary sensitivity to heat rays.
(vi)    It is not affected by harmful radiations.
 

  • 1 answers

Shatayu Ganvir 6 years, 10 months ago

Convert ethanoic acid to ethene and use carbon block or pd to convert to acetylene. Now use red hot fe to convert to benzene.
  • 1 answers

Gagan Panchal 6 years, 10 months ago

Due to its resonating power
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Dhoni Saraswat 6 years, 10 months ago

Because it is non polar solution and water is polar.

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