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Select the incorrect statement about modern periodic table (memory based jee mains shift-1 24/01/2025)

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Select the incorrect statement about modern periodic table (memory based jee mains shift-1 24/01/2025)

a

Physical and chemical properties are based on their atomic weight

b

Physical and chemical properties are based on their atomic number

c

Non-metallic elements are lesser in number than metallic elements

d

In periodic table, 18 groups are present

✓ Correct answer: a)

Physical and chemical properties are based on their atomic weight

Explanation

In the modern periodic table, the physical and chemical properties are periodic functions of the atomic number of elements. In the modern periodic table, there are 18 groups and 7 periods.

At present, there are 118 elements in the modern periodic table. Out of 118 elements the No. of metals=89, No. of non-metals =22, & metalloids=7.

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