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ammonium ion

British  

noun

  1. the ion NH 4 + , formed from ammonia and present in aqueous solutions of ammonia and in many salts

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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A coordinate covalent bond also results when an ammonia molecule combines with a hydrogen ion to form an ammonium ion.

From Textbooks • Feb. 14, 2019

The ammonia acts as a base in accepting this proton, becoming an ammonium ion, the conjugate acid of ammonia.

From Textbooks • Feb. 14, 2019

Hot ammonia and the ammonium ion are active reducing agents.

From Textbooks • Feb. 14, 2019

The ammonium ion is similar in size to the potassium ion; compounds of the two ions exhibit many similarities in their structures and solubilities.

From Textbooks • Feb. 14, 2019

In these reactions, an amine group, or ammonium ion, from the amino acid is exchanged with a keto group on another molecule.

From Textbooks • Jun. 19, 2013

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