Question

22. Electron affinities generally become more favorable (more negative) as you move from left to right across a period. However, the electron affinity for N is less favorable than the electron affinity for C, as shown below. Explain . C(g)+e- C-(g) EA=-122kJ/mol N g)+e- N-(g) ) EA >0 kJ/mol

Answer 1

Answer:

Electron affinity increases upward for the groups and from left to right across periods of a periodic table because the electrons added to energy levels become closer to the nucleus, thus a stronger attraction between the nucleus and its electrons.