Why electrovalent compounds form hard crystals ? – InterviewSolution

1.	Why electrovalent compounds form hard crystals ?
Answer» The crystals of electrovalent compounds are made up of crystal lattice containing oppositely charged ions. Each cation is surrounded by a definite number of anions and vice-versa. Their is a great electrostatic force of attraction among these oppositely charged ions and as a result, ionic compounds form hard crystals.

Discussion

No Comment Found

Related InterviewSolutions

Which type of atoms are stable and less reactive?
What is chemical bond?
Why does ICl7 or IBr7 doesn't exist whereas IF7 exists?
Is there any change in the hybridization of B and N atoms as a result of the following reaction?BF3 + NH3 → F3B.NH3.
Why does type of overlap given in the following figure not result in bond formation?
Which of the following molecule does NOT obey octet rule?(A) BF3 (B) CO2 (C) H2O (D) N2
In both water and dimethyl ether oxygen atom is central atom, and has the same hybridisation, yet they have different bond angles. Which one has greater bond angle? Give reason.
Considering x-axis as the internuclear axis which out of the following will not form a sigma bond and why? (a) Is and Is (b) Is and 2px ; (c) 2py and 2py (d) 1s and 2s.
Which of the following has zero dipole moment?(a) ClF(b) PCl3(c) SiF5(d) CFCl3
Which of the following has maximum dipole moment: Na+, K+, Li+ and Cs+.