A) It reflects the sequence of filling the electrons in the order of sub-energy levels s, p, d and f
B) It helps to predict the stable valency states of the elements
C) It reflects trends in physical and chemical properties of the elements
D) It helps to predict the relative ionicity of the bonds between any two elements
Correct Answer: A
Solution :
It reflects trends in physical and chemical properties of the elements.You need to login to perform this action.
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