The statement that is true for the long form of the periodic table is

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All the above

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

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

answer is D.

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Detailed Solution

All the statements are true. When atomic number, the electrons are filled in orbitals (s, p, d, and f) according to their sub-energy levels.

In long form of periodic table, electrons are arranged in their atomic number and elements having same number of valence electrons are present in one group that have similar physical and chemical properties. This also helps to determine the the relative ionicity of the bond between any two elements.

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