Why does the first element of a group differ from the other elements of the same group ?

Name the first element of group 13.

The first element of groups 13-16 differ rest of the elements This is due to .

The first element of a group shows close resemblance with other elements of the group. True/False.

The first element of group different form its congeners, i.e. other members of the group in many ways. These differences may be due to the following: i. Small size of atom and ion. ii. High electronegativity. iii. Non-availability of low lying d-orbitals. The first element of a group shows resemblance with the second element of the adjacent group on the right. This is known as diagonal relationship. In dry air, lithium and sodium react to give

The first element of group different form its congeners, i.e. other members of the group in many ways. These differences may be due to the following: i. Small size of atom and ion. ii. High electronegativity. iii. Non-availability of low lying d-orbitals. The first element of a group shows resemblance with the second element of the adjacent group on the right. This is known as diagonal relationship. On heating which of the following gives NO_(2) ?

The first element of group different form its congeners, i.e. other members of the group in many ways. These differences may be due to the following: i. Small size of atom and ion. ii. High electronegativity. iii. Non-availability of low lying d-orbitals. The first element of a group shows resemblance with the second element of the adjacent group on the right. This is known as diagonal relationship. Metal (M)+N_(2)rarr Nitride overset(H_(2)O)underset("Hydrolysis")rarr NH_(3) Metal (M) can be

The first element of group different form its congeners, i.e. other members of the group in many ways. These differences may be due to the following: i. Small size of atom and ion. ii. High electronegativity. iii. Non-availability of low lying d-orbitals. The first element of a group shows resemblance with the second element of the adjacent group on the right. This is known as diagonal relationship. Lithium exhibits many physical and chemical similarites with magnesium. The reason is:

Boron is the first element of group 13. Name the second element of this group.

Name the first two elements of group 17.

Chalcogens are elements of the group