Consider the following statements with reference to the periodic table of chemical element
1. Ionisation potential gradually decreases along a period
2. In a group of element, electron affinity decreases as the atomic weight increases
3. In a given period, electronegativity decrease as the atomic number increases
Which of these statement (s) is/are correct

Options

A. 1 only
B. 2 only
C. 1 and 3
D. 2 and 3

Answer

B