Question

In the modern periodic table, the elements are arranged in:

• A. Increasing atomic mass order
• B. Increasing atomic volume order
• C. Increasing atomic number order
• D. Increasing group order

Hint:

The atomic number of an element is crucial in determining its position in the periodic table. The periodic table is arranged in increasing atomic number, not atomic mass, as was earlier believed.

Answer 1

The Correct Option is C

In the modern periodic table, elements are arranged according to their increasing atomic number (the number of protons in the nucleus). This arrangement helps in classifying elements based on their electronic configuration, and it also leads to the periodicity of their chemical and physical properties.