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  • According to Mendeleev's Periodic Law, the elements were arranged in the periodic table in the order of: (a) increasing atomic number (b) decreasing atomic number (c) increasing atomic masses (d) decreasing atomic masses

According to Mendeleev's Periodic Law, the elements were arranged in the periodic table in the order of:
(a) increasing atomic number
(b) decreasing atomic number
(c) increasing atomic masses
(d) decreasing atomic masses

Answers (1)

Ans.(c)
Sol.
Mendeleev realized that the chemical and physical properties of elements were related to their atomic mass in a 'periodic'
way, and arranged them so that groups of elements with similar properties fell into vertical columns in his table. 
So, according to Mendeleev’s periodic table elements are arranged according to atomic mass.

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