Question

Atoms of elements in the same group of the periodic table share the same A. number of energy levels C. atomic numbers B. number of valence electrons D. atomic masses

Answer 1

Answer : OPTION B

The Modern Periodic Table is a Table where elements are classified in the increasing order of their atomic numbers .

The elements are arranged in horizontal rows called periods and vertical columns called groups .

There are in total 7 periods and 18 groups in the Periodic Table .

The Groups have the elements having the same number of valence electrons .

The Periods have the elements having the same number of shells .

The periodic properties of the elements are the properties which appear at regular intervals of the period .

They are atomic radius , ionization potential , electron affinity , metallic , non metallic character and so on .

The phenomenon of appearance of periodic properties is termed as periodicity in properties .