Question

Which one of the following statement regarding the modern periodic table is true?

1)Elements are arranged based on IUPAC name

2)Elements are arranged based on their electronic configuration

3)Elements are arranged based on their atomic weights and traids

4)Elements are arranged based on the law of octaves

Answer 1

Answer:

Only statement 4 is correct. All the elements in the modern periodic table are arranged on the basis of their increasing atomic number. All the isotopes can be placed at one place in the same of the periodic table.

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Answer 2

first one is false

the second is true

the third one is true

the fourth is I don't sure but I think it's false