electron affinity
amount of energy released when an electron is attached to a neutral atom or molecule in the gaseous state to form a negative ion
en-US/ɪˈlɛktɹɑn əˈfɪnɪti/
en-GB/ɛlɛktɹɒn əˈfɪnɪtɪ/
amount of energy released when an electron is attached to a neutral atom or molecule in the gaseous state to form a negative ion