Chemistry, 01.07.2019 10:00, destinyranson

The atomic number of an element is 20. (a) write its electronic configuration and determine its valency. (b) is it a metal or a non-metal ? (c) write the formula of its chloride. (d) is it more reactive or less reactive than mg (atomic number 12) ? give reason for your answer.

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The atomic number of an element is 20. (a) write its electronic configuration and determine its vale...