The elements of groups,1, 2, 13, 14, 15, 16 and 17 are collectively called Options: A . &nbspNoble gases B . &nbspRepresentative or normal elements C . &nbspTransition elements D . &nbspInner transition elements

The elements of groups,1, 2, 13, 14, 15, 16 and 17 are collectively called

Question

The elements of groups,1, 2, 13, 14, 15, 16 and 17 are collectively called

Options:

A . Noble gases

B . Representative or normal elements

C . Transition elements

D . Inner transition elements

Answer: Option B
:
B
In the modern periodic table,elements are classified into representative elements, transition elements, inner transition, inner gases based on electronic configuration.
When the group numberof the elements represents the number of valence electrons they arecalledrepresentative elements.
Group - 1 (1A) - 1 valence electrons
2 (IIA) - 2 valence electrons
3 (IIIA) - 3 valence electrons
4 (IVA) - 4 valence electrons
15 (VA) - 5 valence electrons
16 (VIA) - 6 valance electrons
17 (VIIA) - 7 valence electrons

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