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

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