Question

Choose the property which is not applicable to an element.

• A. Atomic radius decreases from left to right
• B. Electronegativity decreases from top to bottom
• C. Element is a pure substance which cannot be broken down into two or more simpler substances by any physical or chemical process
• D. Electronegativity increases from left to right

Answer 1

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

Electronegativity increases from left to right

Explanation for Correct answer:-

Option(a) Atomic radius decreases from left to right:

• Along the period in the periodic table, electrons feel more repulsion towards the nucleus making the radius smaller
• Hence, it is a correct option.

Option(b) Electronegativity decreases from top to bottom:

• On moving down the group there is an increased distance between the valence electrons and nucleus thus Electronegativity decreases.
• Hence, it is a correct option.

Option(c) Element is a pure substance that cannot be broken down into two or more simpler substances by any physical or chemical process:

• Elements are made up of atoms and since atoms are the smallest unit of matter they cannot be broken down into two or more simpler substances by any physical or chemical process.
• Hence, it is a correct option.

Option(d) Electronegativity increases from left to right:

• Number of protons increases on moving along the period thus Electronegativity increases.
• Hence, it is a correct option.

Therefore, all the properties given are applicable to the element.