Single correct option
Consider the following statements:
1. Atomic radius increases from left to right across a period.
2. Electronegativity increases from left to right across a period.
Which of the statements given above is/are correct?
1. Atomic radius increases from left to right across a period.
2. Electronegativity increases from left to right across a period.
Which of the statements given above is/are correct?
- A. 1 only
- B. 2 only
- C. Both 1 and 2
- D. Neither 1 nor 2
Show answer and solution
Answer: (B) 2 only
Across a period the nuclear charge increases while electrons are added to the same shell, so the nucleus pulls the electrons more strongly and the atomic radius decreases; statement 1 is false. The same effect makes atoms attract shared electrons more strongly, so electronegativity increases; statement 2 is correct. Hence only statement 2 is correct.
Saved on this device. Sign in or create a free account to keep it on every device.