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Magazine Problem 1
Why did Mendeleeff arrange the elements in the increasing order of their atomic weight in his periodic table?
Problem 2
How was the problem of placement of isotopes in Mendeleeff's periodic table overcome in the modern periodic table?
Problem 3
Why did Newland's law of octaves fail?
Problem 5
Why are the "s-" and "p-" blocks elements called representative elements?
Problem 6
General electronic configuration of s-block elements is
Problem 7
Describe the trend of oxidizing and reducing property along a period and a group of the periodic table.
Problem 9
Describe the trend of electron affinity along a period.
Problem 12
Describe the trend of ionization potential along a period and a group in the periodic table.
Problem 13
Why are the chemical properties of the elements belonging to the same group similar?
Problem 14
Why is it that hydrogen can be placed in both I A group and VII A group of the modern periodic table?
