11th Standard Syllabus & Materials
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TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
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Published on: 13/05/2022
QB365 provides detailed and simple solution for every Book back Questions in class 11 Chemistry Subject. It will helps to get more idea about question pattern in every book back questions with solution.
latest Book back QuestionsDownload 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.
Give the general electronic configuration of lanthanides and actinides.
2.
Define electro negativity.
3.
Magnesium loses electrons successively to form Mg+, Mg2+ and Mg3+ ions. Which step will have the highest ionisation energy and why?
4.
Is the definition given below for ionisation enthalpy correct?
"Ionisation enthalpy is defined as the energy required to remove the most loosely bound electron from the valence shell of an atom.
5.
What is effective nuclear charge?
1.
Lanthanides: [54Xe] 4f1-14 5d1 6s2
Actinides : [86Rn] 5f0-146d0-2 7s2
2.
It is defined as the relative tendency of an element present in a covalently bonded molecule, to attract the shared pair of electrons towards itself.
3.
Mg + I.E1 ⟶ Mg+ +1e- .....(i)
Mg+ + I.E2 ⟶ Mg2+ + 1e- ....(ii)
Mg2+ + I.E3 ⟶ Mg3+ + 1e- ....(iii)
(i) The step (iii) which involves the formation of Mg3+ requires higher ionisation energy.
(ii) Mg2+ consist of 10 electrons (2, 8) attaining the stable noble gas configuration of argon (Z = 10).
(iii) Since the valence orbital is completely filled, more energy will be required to remove electrons.
4.
No the above definition is incorrect. The correct definition is Ionization energy is defined as the minimum amount of energy required to remove the most loosely bound electron from the valence shell of the isolated neutral gaseous atom in its ground state.
5.
The net nuclear charge experienced by valence electrons in the outermost shell is called the effective nuclear charge.
Zeff=Z-S
Where Z is the atomic number and 'S' is the screening constant.
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
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