Question

Which of the following are true for modern periodic table?

• A. Allotropes take the same place as the element.
• B. Metals, non metals and metalloids are placed in an orderly manner.
• C. Elements are placed in increasing order of atomic number.
• D. Isotopes take the same place as the element.

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A Allotropes take the same place as the element.
B Metals, non metals and metalloids are placed in an orderly manner.
C Elements are placed in increasing order of atomic number.
D Isotopes take the same place as the element.

In the modern periodic table given below, we can see that all the elements are arranged in the increasing order of their atomic numbers.

Carbon, for an example, has many isotopes and allotropes. But even so, there is only one place for carbon. Thus, the remaining statements are also true. Also, metals are placed on the left side, non-metals on the right side, and metalloids in between them in a zig-zag manner.