Periodic Table

Below table shows the comparison of the elements of group 1[IA] i.e. alkali metals and group 17 [VIIA] i.e., halogens: Property Group 1 [IA] Group 17 [VIIA] Elements Li, Na,…

Characteristics which remain similar on moving down a sub-group are as follows: Valency of electrons. Chemical properties. Characteristics which show a transition on moving down a sub-group are as follows:…

Transition Elements: Elements in Groups 3 to 12 with valence electrons in the d orbital. They are metals with similar properties, positioned between strongly electropositive metals and less electropositive elements.…

(a) Group-1 [IA] — Alkali metals (b) Group-2 [IIA] — Alkaline earth metals (c) Group-3 to 12 IB to VII B, VIII — Transition elements - inner transitional elements. (d)…

Modern periodic table has 18 vertical columns. Each vertical column accommodates elements with the same outer electronic configuration (i.e., valence electrons), hence have similar properties. Group number signifies the same…

(i) The element of group 1 [IA] of period 3 is Na and it's chloride forms ionic bond and is in solid state. The element of group 15 [VA] of…

The property trends in general on moving from left to right in a period of the periodic table are : Number of valence electrons — increases by one Atomic radius…

(a) Completion of each period is logical, since each period begins with an element having one electron in the outer most shell and ends with zero group element having completely…

Elements of the first, second and third periods in increasing order of their atomic number are mentioned below (the atomic number of each element is mentioned in brackets): First period…

Periods are the seven horizontal rows in the modern periodic table. The number of shells in an atom determines it's period. Hence, all the elements of a particular period have…