Hydrogen resembles in many of its properties `:`

Boron resembles silicon in many of its properties. What is this resemblance generally known as?

Water, a compound of Hydrogen is unique in many of its properties. Water can act both as an acid and as a base. Illustrate this statement using chemical reactions.

Be resembles very much in its properties with:

Water a compound of hydrogen is .unique in many of its.properties.Water can act as both acid and base.Explain?

Which is false : Hydrogen act both as oxidiser and reducer, Ortho and para hydrogen are nuclear spin isomers, H_2 is more rapidly adsorbed on surface than D_2 , Isotopes of hydrogen resemble in physical properties but differ in chemical properties

Hydrogen resembles halogens in many respects for which several factors are responsible. Of the following factors which one is most important in this respect ?