Atomic and ionic radii of the elements of group 16 are smaller than those of the corresponding elements of group 15 and increases down the group. Why?

Down a group, the number of energy levels (n) increases, so there is a greater distance between the nucleus and the outermost orbital. This results in a larger atomic radius. Ionic radius is the distance from the...

This is because there is an increase in the number of protons down the group

The covalent radius is always smaller than the corresponding vander Waal's radius. This is because of the fact that in the formation of a chemical bond, the two atoms have...

The d-block elements are called transition metals and have valence electrons in d orbitals. The inner transition elements are those who have their last 3 shells incompletely filled. The f...

Answer: The atomic r is the distance from the atomic nucleus 2 th outermost stable e- of a neutral atom. The ionic r is half the distance between 2 gas...

The positions of K and Ar,Co and Ni do not remain anomalous any longer since atomic number is used in arranging the elements.

With an increase in the element serial number, i.e. by the charge of the nucleus - (the number of protons and electrons) the radius of atoms increases, the density, the...

Lithium is larger, boron is smaller. Because increasing atomic number means increasing positive nuclear charge, which attract the external electrons stronger. Since the electrons have the same mean quantum number...

Ionic bond forms between the metal and nonmetal. Covalent bond forms between 2 nonmetals with different electronegativity. Ba(CN)2 – ionic I2F7 – covalent V(SO4)3 – ionic SeF4 – covalent NH4Cl...

For a given arrangement of ions, the lattice energy increases as ionic radius deceases and as ionic charge increases.