CBSE > Class 11 > Chemistry | CBSE Board | Homework Help

1.hydrogen does not form octate it form doublet. 2.it does not explain the electron rich compound.(it means atom contain more than 8 electron).ex-PCl5 , SF6 3.it does not explain electron deficient compund (it mean atom contain less than 8 electron).ex-BCl3,AlCl3 4.it does not explain the compound of nobel gases.ex-XeF2,XeF4 5.some molecule contain odd no. Of electron in the formation of bond. Ex-NO,NO2

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What is covalent bind?

Posted by Gulab Nagri 6 years, 5 months ago

CBSE > Class 11 > Chemistry

3 answers

Yogiraj Kaushik 6 years, 5 months ago

Jagtar mistri is wrong statement this stat. Of electrovalent {according to class 11th} The writhe stat. Is "the distance b/w two non metals atom is half of from there nucleas"this is called covalent bond.{according to ncert of class 11th}

2Thank You

Gulab Nagri 6 years, 5 months ago

What formal charge?

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Robinpreet Kaur 6 years, 5 months ago

When two atoms share one electron pair they are said to be joined by a covalent bond. Ok baby

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n2 and h2 combine together to give nh3 if 100ml of n2 combines with 300ml of h2 then what volume of nh3 is produced

Posted by Harshmeet Kaur 6 years, 5 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What happens when conc. H2SO4 falls on your hand and how to prevent its irritation ? Please reply as soon as possible!

Posted by Jay Khona 6 years, 5 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

If h2o is water then what is oh2 ?

Posted by Jay Khona 6 years, 5 months ago

CBSE > Class 11 > Chemistry

2 answers

Shashank Maringanti 6 years, 5 months ago

Hydroxide

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Arockiaraj Chinnappan 6 years, 5 months ago

Oh2 is a diatomic hydroxide with positive charge

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What amount of CO2 is formed when 2 gram of carbon react with 8 gram of dioxygen

Posted by Vaishnavi Yadav 6 years, 5 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Define vsep

Posted by Rohit Paul 6 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Priyansh Goyal 6 years, 5 months ago

Velence shell electrone pair repulsion theory

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Whicj book is best for chemistry pradeep or modern abc . Reply fasy ????

Posted by Diksha Y 6 years, 5 months ago

CBSE > Class 11 > Chemistry

5 answers

Priyansh Goyal 6 years, 5 months ago

Pardeep

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Manvi Sharma 6 years, 5 months ago

Modern abc

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Unique Man 6 years, 5 months ago

Pradeep

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Tannu Sharma 6 years, 5 months ago

Modern ABC

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Sarah ? 6 years, 5 months ago

Acc to me for chem..modern

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Tips for styding plźzźźzzz

Posted by Diksha Y 6 years, 5 months ago

CBSE > Class 11 > Chemistry

2 answers

Jheel Tippan 6 years, 5 months ago

Revise ur school work daily Do seld studyat least 3 hr Revise n repeat ncert Solve as many question as u can from exemplar after doing ncert

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Manvi Sharma 6 years, 5 months ago

Do self study

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Why electron have one up quarks and 2 down quarks ?

Posted by Sugeet Jadhav 6 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Anjali Kumawat 6 years, 5 months ago

Neutron contain one up quarks & two down quarks. The nucleus is held together by the "strong nucleus force" which is one of four fundamental forces (gravity & electrmagnetism are two others). The strong force counteracts the tendency of the positively-charged protons to repel each other.

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what are the drawbacks of rutherfords atomic model ?

Posted by Latha Durairaj 6 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Ravi Yadav 6 years, 5 months ago

Rutherford can not explain stability of atom And energy and orientation of atom

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What is photoelectric effect? Explain it on the basis of quantum theory.

Posted by Neelam Kumari 6 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Robinpreet Kaur 6 years, 5 months ago

It is a phenomenon in which light of suitable frequency strikes on metal surface to ejects the electrons from metal surface

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find mass of o2required to produce 44.8l of co2

Posted by Supriya Kumari 6 years, 5 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What are the properties of electron and who discovered electron ?

Posted by Haris Ansari 6 years, 5 months ago

CBSE > Class 11 > Chemistry

2 answers

Anjali Kumawat 6 years, 5 months ago

Electron have three fundamental properties:- Charge, mass and spin. By definition the electric charge on an electron is 1. The mass of an electron has been measured and found to be 9.109389*10 ki power -31 kilogram. Electrons also spin on their axes in much the same way that planets do. Electron discovered by the J. J. Thomson in 1897.

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Mubin Nagari 6 years, 5 months ago

electron discovered J J Thomson

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How many Metals, non– metals ,and metalloids are in periodic table

Posted by Harshit Kumar 6 years, 5 months ago

CBSE > Class 11 > Chemistry

2 answers

Harshit Kumar 6 years, 5 months ago

Aur kya ho rha h

1Thank You

Yogiraj Kaushik 6 years, 5 months ago

93 metals , 20 non metals, 7 mettaloids

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Calculate molality of sulphuric acid solution in which mole fraction of water is 0.85

Posted by Khyati Jha 6 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Preeti Dabral 6 years, 5 months ago

If the mole fraction of water is 0.85, the mole fraction of sulfuric acid is 0.15.
So, we can express the concentration as
{tex}\frac { 0.15 \mathrm { mol } \text { sulfuric acid } } { 0.85 \text { mol water } }{/tex}
Convert moles of water to kilograms of water
Mass of water = {tex}0.85 \mathrm { mol } \mathrm { H } _ { 2 } \mathrm { O } \times \frac { 18.02 \mathrm { g } \mathrm { H } _ { 2 } \mathrm { O } } { 1 \mathrm { mol } \mathrm { H } _ { 2 } \mathrm { O } } \times \frac { 1 \mathrm { kg } \mathrm { H } _ { 2 } \mathrm { O } } { 1000 \mathrm { g } \mathrm { H } _ { 2 } \mathrm { O } }{/tex}
=0.0153 kg H₂O
Calculate the molal concentration of the water
m = {tex}\frac { 0.15 \mathrm { mol } \text { sulphuric acid } } { 0.0153 \mathrm { kg } \text { water } }{/tex}= 9.8 mol/kg

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Explain formality?

Posted by Vasu Khanna 6 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 6 years, 5 months ago

Formality of a solution may be defined as the number of gram formula masses of the ionic solute dissolved per litre of the solution.

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Calculate the amount of water produxed by the cimbination of 16 gram of methane

Posted by Akshita Arya 6 years, 5 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Calculate the molecular mass of the following 1.H2so4 2.h2co3

Posted by Siddhant Srivastav 6 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Vidulaa Anand 6 years, 5 months ago

1. H2SO4: 1(2)+32(1)+16(4)=98 98 is the molecular mass of sulphuric acid. 2.H2CO3: 1(2)+12(1)+16(3)=62 62 is the molecular mass of carbonic acid. Hope it is useful...

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Write the limitations of the octet rule?

Posted by Gulab Nagri 6 years, 5 months ago

CBSE > Class 11 > Chemistry