What is the trend for electron affinity when going from left to right across a period in the periodic table?
A. Electron affinity increases.
B. Electron affinity decreases.
C. Electron affinity remains constant.
D. Electron affinity fluctuates.
Answer:A
What is the trend for electron affinity when going from left to right across a period in the periodic table?
A. Electron affinity increases. B. Electron affinity decreases. C. Electron affinity remains constant. D. Electron affinity fluctuates.
Explanation: When going from left to right across a period, the effective nuclear charge increases, causing a stronger attraction for incoming electrons, resulting in an increase in electron affinity.