Question

13) In modern periodic table there are .... groups
14
16
17
18​

Answer 1

Answer:

The elements of groups, 1,2,13,14,15,16 and 17 are collectively called Representative or normal elements. These are s block (groups 1 and ) and p block (groups 13, 14,15, 16 and 17) elements respectively. Noble gases belong to zero group or group 18 of the periodic table. Transition elements are d block elements

Explanation:

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Answer 2

Answer:

In modern periodic table there are 18 groups.

Explanation:

vertical Columns are called groups.