Which of the following is the most ionic?
P4O10
MnO
CrO3
Mn2O7
Magnitude of positive charge α polarization power
α covalent character
α 1/ ionic character
If the magnitude positive charge is high then it will be very unstable to be to remain as an ion because it needs an electron to get stable that's why it makes a covalent bond at high magnitude positive charge.
--------------------------
magnitude positive charge
P4O10 P = +5
MnO Mn = +2
CrO3 Cr = + 6
Mn2O7 Mn = + 7
Among them, MnO has the lowest magnitude positive charge. Hence, MnO is the most ionic compound.
Study 40% syllabus and score up to 100% marks in JEE