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Chemistry

The atoms of this element have a low electron affinity and will replace hydrogen atoms when placed into water what element is this?

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06/20/2014

The element is sodium. Sodium atoms have a low electron affinity and will replace hydrogen atoms when placed into water. The reaction of sodium and water produces hydrogen gas that is ignited by the heat of the reaction. It should be noted that almost any element in the alkali and alkaline-earth groups will replaced hydrogen in water.