11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil என்னுயிர் என்பேன் -துணைப்பாடம் - இசைத்தமிழர் இருவர் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
Published on: 13/05/2022
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Creative Questions in class 11 Chemistry Subject. It will helps to get more idea about question pattern in every Creative questions with solution.
Download Tamil Nadu 11th Standard Chemistry question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Chemistry Test1.
Explain about the period variation of electronegativity along a group.
2.
Explain about periodic variation of electro negativity across a period.
3.
Explain about the factors that affect electronegativity.
4.
Electron affinity of oxygen is less negative than sulphur. Justify this statement.
5.
Electron gain enthalpy of F is less negative than Cl. Why?
1.
As we move down from top to bottom in a group, electronegativity decreases due to increased atomic radius. Fluorine has the highest value of electronegativity among all the elements.
2.
As we move from left to right in a period, electronegativity increases. This is due to the following reasons:
(a) Nuclear charge increases in a period
(b) Atomic size decrease in a period
Halogens have the highest value of electronegativity in their respective periods.
3.
(i) Effective nuclear charge: As the nuclear charge increases, electronegativity also increases along the periods.
(ii) Atomic radius: The atoms in smaller size will have larger electronegativity.
4.
When an electron is added to oxygen, the added electron goes to the 'L' shell (n = 2). As the 'L' shell possess smaller region of space, the added electron feels significant repulsion from the other electrons present in this level.
E.A of O=-141 KJ mole-1
E.A of S = -200 KJ mole-1
5.
When an electron is added to F, the added electron goes to the L shell (n = 2). As the 'L' shell possess smaller region of space, the added electron feels significant repulsion from the other electrons present in this level.
E.A of F = -328 KJ mole-1 .
E.A of CI = -349 KJ mole-1.
11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - துணைப்பாடம் - யானை டாக்டர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 11th Standard Subjects
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Physics
Chemistry
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Physics
Chemistry
History
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