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

Ionisation enthalpy decreases down the group. That's why H has more ionisation enthalpy than Na (as we know H is placed before Na in group 1 i.e alkali metals).

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Dhruv Bansal 7 years, 10 months ago

Hydrogen have more ionisation enthalpy than Sodium because the size of Hydrogen is comparitively small than Sodium so there needs greater ionisation enthalpy for the break down of Hydrogen atom than Sodium atom.

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what is inuctive inffect

Posted by Sanjay Lunna 7 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Ekansh Verma 7 years, 10 months ago

The polarity thus produced in an organic compound by the shifting of sigma electrons towards more electronegative atom or group,is called inductive effect .

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What are silicones how they are manufactured

Posted by Sangam Sangam 7 years, 10 months ago

CBSE > Class 11 > Chemistry

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State aufbao principle

Posted by Prashanth Raj 7 years, 10 months ago

CBSE > Class 11 > Chemistry

2 answers

Shubh Jaiswal 7 years, 10 months ago

According to aufbau principal electron first occupy first the lowest energy orbital then higher energy orbital...aufbau means construction or built up

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Shubham Mehra 7 years, 10 months ago

The electrons in an orbital are filled according to their energies

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Tommorow i have chemistry theory exam iam able to solve the theory exam...but i have little doubt in that so pleasehelp me frnds......

Posted by Manasa S 7 years, 10 months ago

CBSE > Class 11 > Chemistry

2 answers

Simran Khatri 7 years, 10 months ago

Yes plz tell me how i can hlp u

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Megha Singh 7 years, 10 months ago

Yes how I can help u

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Day after tomorrow.. is my chem theory exam .. i am able to solve comprehensive back questions but unable to solve any previous year question paper...i would like to request a experienced teacher to help me out pls

Posted by Rik Sarkar 7 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Virendra Choudhary 7 years, 10 months ago

Yes tell question

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What is s-character ?

Posted by Aarohi Agrawal 7 years, 10 months ago

CBSE > Class 11 > Chemistry

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Give reason for IE3>IE2>IE1

Posted by Anjali Yadav 7 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Abhay Shrivastava 7 years, 10 months ago

IE means min amt of energy required to remove an e- from isolated gaseous atom. For eg Na if we remove an e- from it. It will have 10 e-s . 1s2 2s2 2p6 which is an stable e- configuration so we will require large amt of energy to remove 2nd e- and so on. Therefore IE3 >IE2> IE1. I think u got it.

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Anshika madam apne paper ni Dene h na

Posted by Mohit Fdk 7 years, 10 months ago

CBSE > Class 11 > Chemistry

2 answers

Mohit Fdk 7 years, 10 months ago

Ye app anshika se bolo oske pass h

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Megha Singh 7 years, 10 months ago

Mujhe b chahiye paper

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Potassium carbonate cannot be prepared by solvay process.Why?

Posted by Yashika Lalwani 7 years, 10 months ago

CBSE > Class 11 > Chemistry

2 answers

Manisha Sahay 7 years, 10 months ago

Because KHCO3 obtained in carbonation tower is water soluble which cannot pe obtained as ppt.

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Manisha Sahay 7 years, 10 months ago

Because if we use potaasiun it will form k2SO4 which is soluble in water

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Give reason ''the Droplets of water are sherical in shape"

Posted by Yashwanth Babu 7 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Vishal Gupta 7 years, 10 months ago

This is beacause of surface tension

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Work done in adiabatic process

Posted by Sajjan Thood 7 years, 10 months ago

CBSE > Class 11 > Chemistry

3 answers

Sajjan Thood 7 years, 9 months ago

Thanx simran and bhupendra

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Simu Rao 7 years, 10 months ago

nR (T1-T2)/gamma -1

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Bhupendra Ahirwar 7 years, 10 months ago

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Describ estimations of halogens by carius method

Posted by Darshan Kumar 7 years, 10 months ago

CBSE > Class 11 > Chemistry

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The degree of dissociation of N2o4 into NO2 at 1 atm and 313k is 0.310. Calculate kp of the dissociation reaction at 10 atm at same temp.

Posted by Chaitak Kumar 7 years, 10 months ago

CBSE > Class 11 > Chemistry

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What is dispersion forces

Posted by Anab Qureshi 7 years, 10 months ago

CBSE > Class 11 > Chemistry

0 answers

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What is the iupac name of the element having atomic no. 110

Posted by Aman Pant 7 years, 10 months ago

CBSE > Class 11 > Chemistry

2 answers

Jaya Verma 7 years, 10 months ago

Ununnillium

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Mahima Sharma 7 years, 10 months ago

Darmstadtium

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To prepare a standard solution (0.1M) oxalic acid solution

Posted by Parveen Kumar 7 years, 10 months ago

CBSE > Class 11 > Chemistry

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What are aromatic compound

Posted by Kunal Goyat 7 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Akash Shukla 7 years, 10 months ago

Compound of benzene is called aromatic compound

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How to count number of carbon in benzene ring??

Posted by Katyayan Mishra 7 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Rajesh Nathani 7 years, 10 months ago

There are 6 on each dot(point) there is one

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What is aromatization?

Posted by Amrit Kr Singh 7 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Aastha Saini 7 years, 10 months ago

The process of converting open into closed chain by cyclisation and closed chain into aromatic compound by dehydrohalogenation called aromatization

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What is fractional Distillation ?

Posted by Yuvraj Singh 7 years, 10 months ago

CBSE > Class 11 > Chemistry

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What is azimuthal quantum num?

Posted by Prateek Pandey 7 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Anshika Choudhary 7 years, 10 months ago

It tells about the sub energy level of electron in an atom It is represented By " l" The valve of " l" depends on valve of " n". l= 0 to (n-1)

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What are anomalous properties of second period elements?

Posted by Prachi Mittal 7 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Abhinav Kalaliya 7 years, 10 months ago

difference in properties from their respective groups

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??How to convert benzene into para nitro bromo Benzene ????

Posted by Yo Yo Honey Singh ? 7 years, 10 months ago

CBSE > Class 11 > Chemistry

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Structure of but-2-en-1-ol

Posted by Rajiv Sain 7 years, 10 months ago

CBSE > Class 11 > Chemistry

4 answers

Yuvraj Patel 7 years, 10 months ago

CH3-CH--CH-COH

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Anshika Choudhary 7 years, 10 months ago

Wait I try it

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Anshika Choudhary 7 years, 10 months ago

I know but kaise batau yaha

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Rajiv Sain 7 years, 10 months ago

????

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What is pie bond

Posted by Preeti Rawat 7 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Kashish Verma 7 years, 10 months ago

In the formation of pi bond the atmoic orbital overlap in such a way that their axes remains parallel to each other and perpendicular to the internuclears axis

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blue print of chemistry

Posted by Sumit Singh 7 years, 10 months ago

CBSE > Class 11 > Chemistry