EASY
11th Telangana Board
IMPORTANT
Earn 100

What is the valency possible to Arsenic with respect to Oxygen and Hydrogen?

Important Questions on Classification of Elements and Periodicity in Properties

EASY
11th Telangana Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 2 - Classification of Elements and Periodicity in Properties>QUESTIONS>Q 29
What is an amphoteric oxide? Give the formula an amphoteric oxide formed by an element of group-13.
EASY
11th Telangana Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 2 - Classification of Elements and Periodicity in Properties>QUESTIONS>Q 30

Name the most electronegative element. Is it also having the highest electron gain enthalpy? Why or Why not?

EASY
11th Telangana Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 2 - Classification of Elements and Periodicity in Properties>QUESTIONS>Q 31
What is diagonal relation? Give one pair of elements, that have this relation.
MEDIUM
11th Telangana Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 2 - Classification of Elements and Periodicity in Properties>QUESTIONS>Q 32
How does the nature of oxides vary in the third period?
EASY
11th Telangana Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 2 - Classification of Elements and Periodicity in Properties>QUESTIONS>Q 33
Radii of iron atom and its ions follow Fe>Fe2+>Fe3+-Explain.
EASY
11th Telangana Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 2 - Classification of Elements and Periodicity in Properties>QUESTIONS>Q 34
IE2>IE1 for a given element-why?
EASY
11th Telangana Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 2 - Classification of Elements and Periodicity in Properties>QUESTIONS>Q 35
What is lanthanide contraction? Give one of its consequences.
EASY
11th Telangana Board
IMPORTANT
Intermediate First Year Chemistry>Chapter 2 - Classification of Elements and Periodicity in Properties>QUESTIONS>Q 36
What is the atomic number of the element, having maximum number of unpaired 2p-electrons? To which group that it belong?