HARD
10th CBSE
IMPORTANT
Earn 100

Arrange the elements of group 17 according to decreasing order of electronegativity.

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 4
Group 17 elements form negative ions. Why?
HARD
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>SELF-EVALUATION TEST>Q 5
An element P (atomic number 20) reacts with an element Q (atomic number 17) to form a compound. Answer the following question giving reason: 
Write the position of P and Q in the modern Periodic Table.
HARD
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>SELF-EVALUATION TEST>Q 5

An element P (atomic number 20) reacts with an element Q (atomic number 17) to form a compound. Answer the following question giving reason: 

The molecular formula of the compound formed when P reacts with Q. 

EASY
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>SELF-EVALUATION TEST>Q 6
Write the names given to the vertical columns & horizontal rows in the Modern Periodic Table. 
HARD
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>SELF-EVALUATION TEST>Q 6
How does the metallic character of elements vary on moving down a vertical column? 
HARD
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 5 - Periodic Classification of Elements>SELF-EVALUATION TEST>Q 6
How does the size of atomic radius vary on moving left to right in a horizontal row? 
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?