MEDIUM
10th CBSE
IMPORTANT
Earn 100

What happens to acidic character of oxides along the period and why ?

Important Questions on Periodic Classification of Elements

EASY
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 5 - Periodic Classification of Elements>Summative Assessment>Q 20
Which group elements can gain electrons most easily and why ?
EASY
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 5 - Periodic Classification of Elements>Summative Assessment>Q 21
What are 'groups' and 'periods' in the periodic table ?
MEDIUM
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 5 - Periodic Classification of Elements>Summative Assessment>Q 21
Two elements M and N belong to groups I and Il respectively and are in the same period of the periodic table. How do the following properties of M and N vary?
(i) Sizes of their atoms.
(ii) Their metallic characters.
(iii) Their valencies in forming oxides.
(iv) Molecular formulae of their chlorides.
MEDIUM
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 5 - Periodic Classification of Elements>Summative Assessment>Q 22
Compare and contrast the arrangement of elements in Mendeleev's periodic table and the modern periodic table.
MEDIUM
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 5 - Periodic Classification of Elements>Summative Assessment>Q 23
How valency of an element can be found out from its electronic configuration? Give three examples.
HARD
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 5 - Periodic Classification of Elements>Summative Assessment>Q 24
Atomic number is considered to be a more appropriate parameter than atomic mass for classification of elements in a periodic table. Why?
MEDIUM
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 5 - Periodic Classification of Elements>Summative Assessment>Q 24
How does atomic size of elements vary on moving from (i) left to right in a period.
(ii) from top to bottom in a group. Give reason for your answer.