Question

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

Answer 1

The correct option is C

increasing atomic masses

Explanation for the correct option:

Option c) Increasing atomic masses

• According to Mendeleev’s Law, the chemical properties of a particular element are a periodic function of the atomic mass of the same element.
• The atomic mass is the basis of the Mendeleev’s classification of elements.
• The elements are arranged in the increasing order of atomic masses and their properties.
• Mendeleev’s law states that “the properties of elements are periodic function of the atomic masses”.

Hence option (c) is correct. The elements were arranged in the periodic table in the order of increasing atomic masses, according to Mendeleev’s Periodic Law.