HARD
10th CBSE
IMPORTANT
Earn 100

How does the size of atomic radius vary on moving left to right in a horizontal row? 

Important Questions on Periodic Classification of Elements

HARD
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>SELF-EVALUATION TEST>Q 6
Why do we classify elements? 
HARD
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>SELF-EVALUATION TEST>Q 6
What were the two criteria used by Mendeleev in creating his periodic table? 
HARD
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>SELF-EVALUATION TEST>Q 6
Why did Mendeleev leave some gaps in his periodic table? 
MEDIUM
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>SELF-EVALUATION TEST>Q 7
State the Modern Periodic Law. Discuss how Modern Periodic Table has removed the various anomalies of Mendeleev's Periodic table? 
HARD
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>SELF-EVALUATION TEST>Q 8
An element X belongs to period 3 and Group 2 of the periodic table. State the number of electrons in the outermost shell of element.
HARD
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>SELF-EVALUATION TEST>Q 8

An element X belongs to period 3 and Group 2 of the periodic table. What is the valency of element? 

HARD
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>SELF-EVALUATION TEST>Q 8
An element X belongs to period 3 and Group 2 of the periodic table. Is it a metal or a non-metal? 
HARD
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>SELF-EVALUATION TEST>Q 8
An element X belongs to period 3 and Group 2 of the periodic table. What is the formula of its hydride?