MEDIUM
10th CBSE
IMPORTANT
Earn 100

Two argon atoms do not form a covalent bond to give an argon molecule Ar2. Why?

Important Questions on Elementary Idea of Bonding

HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 2 - Elementary Idea of Bonding>EXERCISES>Q 4
The elements W, X, Y & Z  have atomic numbers 7, 9, 10 & 11 respectively. Write the formula of the compound you would expect to be formed between the following pairs of elements and indicate the type of bonding present.
a) W & X
b) X & X
c) W & Z
d) Y & Y
HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 2 - Elementary Idea of Bonding>EXERCISES>Q 5
The elements X & Y has following configurations –
X- 2,6
Y- 2,8,8,2
What is the nature of the bond between X & Y.
HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 2 - Elementary Idea of Bonding>EXERCISES>Q 6
A metal A (atomic number 19) burns with chlorine to produce a white solid chloride B. By means of diagrams show the arrangements of electrons in A both before and after the reaction.
HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 2 - Elementary Idea of Bonding>EXERCISES>Q 7
Distinguish between an atom and an ion.
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 2 - Elementary Idea of Bonding>EXERCISES>Q 8
How are covalent bond forms?
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 2 - Elementary Idea of Bonding>EXERCISES>Q 9
Sodium chloride dissolves in water while carbon tetrachloride doesn’t . Why?
HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 2 - Elementary Idea of Bonding>EXERCISES>Q 11
Describe the electronic structures of CH4  and CO2.
HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 2 - Elementary Idea of Bonding>EXERCISES>Q 12
What is the role of valence electrons in the formation of chemical compound?