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Which element would most likely have a positive electron affinity?NaAlRbAr

Annie Barnes

in Chemistry

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Nicholas Rivera on August 9, 2018

The correct answer is Na, Sodium metal Electron affinity is the change in energy of a neutral atom or molecule when an electron is added to the atom to form a negative ion. In simple terms it is the probability of winning an electron. Non-metals like to gain electrons to form anions to have a fully stable electron shell, while metals lose electrons to form cations, and have a stable electron shell. Argon atom, for example, in the gas phase; it emits energy when it gains an electron to form an ion of Argon.


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