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Variation of electonic confurgration

Posted by Preshit Kasaudhan 7 years, 1 month ago

2 answers

Tripti Shah 7 years, 1 month 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...

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Vishal Yaduvanshi 7 years, 1 month ago

2,2,4,1

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limitations of bohr model

Posted by Harman Sahota 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 7 years, 1 month 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.

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Claculate the solubility of A2X3 in pure assuming that neither kind of ion react with water the solubility product of A2X3 ksp =1.1×10^-23

Posted by Aman Sharma 7 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

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Relationship between Kp and Kc

Posted by Juhi Sharma 7 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Shivshant Prasad 7 years, 1 month ago

Kp=[Kc]RT^∆ng

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Shivam H¥Dra 7 years, 1 month ago

Bhai simple hai

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Acetylene convert into but -2-yne

Posted by Suraiya Mallick 7 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

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What is catalyst ??

Posted by Tripti Shah 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Meghna Sharma 7 years, 1 month ago

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

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How acetylene convert into but -2-yne

Posted by Aribul Mallick 7 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

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Why does a catalyst not effect the magnitude of equilibrium constant

Posted by Chandana Sinha 7 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Aashir Arham ⚽?⚽ 7 years, 1 month ago

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

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Meghna Sharma 7 years, 1 month 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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State Henry's law

Posted by Chandana Sinha 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Meghna Sharma 7 years, 1 month ago

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

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Wenders waals equetion

Posted by Sun Sun 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Anisha Sharma 7 years, 1 month ago

[P+an²/v²][v-nb]=nrt

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Compare the size of Na atom with Na+ion

Posted by Aayushi Y 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Anmol Chauhan 7 years, 1 month ago

Size of Na+ is smaller than Na bcz z effect iss increased

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What is cathode rays?

Posted by Shivam Singh 7 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Tripti Shah 7 years, 1 month ago

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

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Tripti Shah 7 years, 1 month ago

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

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Define daniel cell

Posted by Santhosh Srivatsan 7 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

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calculate molarity of H2O2 solution which is marked as 30 volume

Posted by Sakshi Kumari 7 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

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What is modern periodic law?

Posted by Saurav Kumar 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Anisha Sharma 7 years, 1 month ago

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

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NH3 is liquid base but NH4+ is not why

Posted by Akash Rawat 7 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

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Explain how boiling point is related to its vapour pressure??

Posted by Anisha Sharma 7 years, 1 month ago

CBSE > Class 11 > Chemistry

3 answers

Anisha Sharma 7 years, 1 month ago

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

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Pradeep Kumar Madhukar 7 years, 1 month ago

100 c

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Anisha Sharma 7 years, 1 month ago

is there nobody who can answer this question??

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Why liquids diffuses slowly as compared to gases

Posted by Rockz Creation 7 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Ishita Jain 7 years, 1 month ago

Up to downeffect

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Meghna Sharma 7 years, 1 month ago

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

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Le chatters principle is what??

Posted by Sahil Rupal 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Meghna Sharma 7 years, 1 month 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.

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Which has longest radius? covalent radius, van der Waal's radius, Metallic radius, Ionic radius.

Posted by Aditya Pandey 7 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Anisha Sharma 7 years, 1 month ago

vanderwaal radius

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Prashant Singh 7 years, 1 month ago

van der walls radius has longest radius.

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Most important topics of chemistry.

Posted by Aditya Kadam 7 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Meghna Sharma 7 years, 1 month ago

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

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Hemant Tiwari 7 years, 1 month ago

Inert pair effect

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What is the most important question in chemestry ??

Posted by Tripti Shah 7 years, 1 month ago

CBSE > Class 11 > Chemistry

3 answers

Tripti Shah 7 years, 1 month ago

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

1Thank You

Hemant Tiwari 7 years, 1 month ago

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

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Garhwalli???? Nona 7 years, 1 month ago

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

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how to convert ethene to methanal by ozonolysis

Posted by Badal Dahiya 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Hemant Tiwari 7 years, 1 month 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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Important topics of thermodynamics

Posted by Ritu Singh 7 years, 1 month ago

CBSE > Class 11 > Chemistry

2 answers

Aashir Arham ⚽?⚽ 7 years, 1 month ago

Entropy,Enthalpy

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Meghna Sharma 7 years, 1 month ago

Hess's law, gibbs free energy

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Explain why alkyl groups act as electron donors when attached to a pi system.

Posted by Prince Sahani 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Hemant Tiwari 7 years, 1 month 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.

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State huckel's rule

Posted by Bhavna Tiwari 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 7 years, 1 month 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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About diamond structure

Posted by Shivam Dubey 7 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Gaurav Seth 7 years, 1 month 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.

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Convert ethanoic acid into benzene

Posted by Vishwa Pratap Singh 7 years, 1 month ago

CBSE > Class 11 > Chemistry