Which of the following statements is/are...

Which of the following statements is/are true for the long form of the periodic table?

It reflects the sequence of filling the electrons in the order of sub-energy level s, p, d and f

It helps predict the stable valency states of the elements

It reflects trends in physical and chemical properties of the elements

It helps to predict the relative ionicity of the bond between any two elements

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The correct Answer is:

A, C, D

Periodic table does not help to predit the stable valency states of the elements.

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Which of the following statements is/are true about the modern form of periodic table?

Third group of periodic table accommodates maximum number of elements.

Due to presence of half filled and fully filled sub shells in electronic configuration electronegativity of atom increases

The element of 13 th group and 7th period will have atomic number 113.

Diagonal relationship in 2nd and 3rd period element is found due to similar charge to size ratio

Properties of the elements are the periodic functions of their atomic number

There are 7 periods

There are 8 groups

It has separate positions for the isotopes

Eight horizontal rows and seven vertical columns

Seven horizontal rows and eighteen vertical columns

Seven horizontal rows and seven vertical columns

Eight horizontal rows and eight vertical columns