________ is enthalpy change that occurs when 1 mole of gaseous atoms gain 1 mole of electrons to form 1 mole of gaseous ions each with a 1- charge.

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The OCR A Chemistry specification splits the content into 6 modules:

(1) Development of practical skills in chemistry (2) foundations in chemistry (3) Periodic table and energy (4) Core organic chemistry (5) Physical chemistry and transition metals (6) Organic chemistry and analysis.
 


1. ________ is enthalpy change that occurs when 1 mole of gaseous atoms gain 1 mole of electrons to form 1 mole of gaseous ions each with a 1- charge.