HARD
10th CBSE
IMPORTANT
Earn 100

Why sodium chloride has a high melting point?

Important Questions on Metals And Non-Metals

HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3B>Q 4
Show the electronic transfers in the formation of MgCl2 from its elements.
HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3B>Q 1

Amongst the metals, non-metals and noble gases to which category do the elements belong, if they form:

(i) positively charged ions, (ii) negatively charged ions, (iii) no ions?

HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3B>Q 2
Show the formation of sodium oxide [Na2O] by the transfer of electrons between combining atoms.
HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3B>Q 2
Why are ionic compound usually hard?
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3B>Q 2
How is it that the ionic compounds in the solid state do not conduct electricity and they do so when in the molten state?
HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3B>Q 3
Show with the help of a diagram the transfer of electrons between the atoms in the formation of MgO.
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3B>Q 3
Name the solvent in which ionic compounds are generally soluble.
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3B>Q 3
Why aqueous solutions of ionic compounds conduct electricity?