Tiwari Academy Discussion

Asked: December 20, 2020In: Class 10 Science

Write down three elements that show Dobereiner’s triad.

NCERT Solutions for Class 10 Science Chapter 5 Important Board Questions Periodic Classification of Elements NCERT Books for Session 2022-2023 CBSE Board and UP Board Very Short Question Questions No: 8

Chemistry 10 Sir

Asked: December 20, 2020In: Class 10 Science

Name the element that has same number of electrons as that of K⁺ and Cl⁻ have.

NCERT Solutions for Class 10 Science Chapter 5 Important Board Questions Periodic Classification of Elements NCERT Books for Session 2022-2023 CBSE Board and UP Board Very Short Question Questions No: 7

Chemistry 10 Sir

Asked: December 20, 2020In: Class 10 Science

An elements ‘y’ belongs to group 1. Find formula for its oxide.

NCERT Solutions for Class 10 Science Chapter 5 Important Board Questions Periodic Classification of Elements NCERT Books for Session 2022-2023 CBSE Board and UP Board Very Short Question Questions No: 6

Chemistry 10 Sir

Asked: December 19, 2020In: Class 10 Science

How many elements are known till date?

NCERT Solutions for Class 10 Science Chapter 5 Important Board Questions Periodic Classification of Elements NCERT Books for Session 2022-2023 CBSE Board and UP Board Very Short Question Questions No: 13

Chemistry 10 Sir

Asked: December 19, 2020In: Class 10 Science

What do you mean by valency?

NCERT Solutions for Class 10 Science Chapter 5 Important Board Questions Periodic Classification of Elements NCERT Books for Session 2022-2023 CBSE Board and UP Board Very Short Question Questions No: 12

Chemistry 10 Sir

Asked: December 19, 2020In: Class 10 Science

Which important property did Mendeleev use to classify the elements in his periodic table?

NCERT Solutions for Class 10 Science Chapter 5 Important Board Questions Periodic Classification of Elements NCERT Books for Session 2022-2023 CBSE Board and UP Board Very Short Question Questions No: 11

Chemistry 10 Sir

Asked: December 18, 2020In: Class 10 Science

Why metallic oxides are basic in nature whereas non-metallic oxides are acidic in nature?

NCERT Solutions for Class 10 Science Chapter 5 Important Board Questions Periodic Classification of Elements NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Question Questions No: 6

Chemistry 10 Sir

Asked: December 18, 2020In: Class 10 Science

What do you mean by metallic character of an element? How does it vary as we go down a group? Give reason for this variation.

NCERT Solutions for Class 10 Science Chapter 5 Important Board Questions Periodic Classification of Elements NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Question Questions No: 5

Chemistry 10 Sir

Asked: December 18, 2020In: Class 10 Science

Why is the position assigning to hydrogen in the periodic table considered anomalous?

NCERT Solutions for Class 10 Science Chapter 5 Important Board Questions Periodic Classification of Elements NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Question Questions No: 4

Chemistry 10 Sir

Asked: December 18, 2020In: Class 10 Science

Write two limitations of Mendeleev’s Periodic Table.

NCERT Solutions for Class 10 Science Chapter 5 Important Board Questions Periodic Classification of Elements NCERT Books for Session 2022-2023 CBSE Board and UP Board Short Question Questions No: 3

Write down three elements that show Dobereiner’s triad.

Name the element that has same number of electrons as that of K⁺ and Cl⁻ have.

An elements ‘y’ belongs to group 1. Find formula for its oxide.

How many elements are known till date?

What do you mean by valency?

Which important property did Mendeleev use to classify the elements in his periodic table?

Why metallic oxides are basic in nature whereas non-metallic oxides are acidic in nature?

What do you mean by metallic character of an element? How does it vary as we go down a group? Give reason for this variation.

Why is the position assigning to hydrogen in the periodic table considered anomalous?

Write two limitations of Mendeleev’s Periodic Table.

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