If the ionic radii of `K^(+) and F^(-)` are nearly the same (i.e., 1.34 Å), then the atomic radii of K and F respectively are:

If the ionic radii of each K^(+) and F^(-) are 1.34Å , then tha atomic radii of K and F will be respectively:

The radii of F,F^(-),O and O^(-2) are in the order of

The ionic radii of N^(3-), O^(2-) and F^(-) are respectively given by:

Along the period (rarr) atomic // ionic radii and metallic character decreases while IE , EN , non-metallic character and oxidising power increases. Down the group (darr) , atomic // ionic radii, metallic character and reducing character increase while IE and EN decrease. However, Delta_(eg)H^(ɵ) becomes less negative down a group but more negative along a period. If the ionic radii of M^(o+) and X^(ɵ) are about 135 p m , then expected values of metallic radii of M and X should be respectively.

The ionic radii of O^(2-),F^(-) , Na^(+) and Mg^(2+) are in the order :

The ionic radii of N^(3-) O^(2-), F^-, Na^+ follows the order

The ionic radii of A^(+) and B^(-) are 1.7 Å and 1.8 Å respectively . Find the co-ordination number of A^(+)

If ionic radii of Cs^(+) and Cl^(-) are 1.69Å and 1.81Å respectively, the edge length of unit cell is

The radii (metallic) of Fe,Co and Ni are nearly same. This is due to:

Al and Ga have nearly the same covalent radii because of