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18 January, 12:27

What is an element of calcium?

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Answers (2)
  1. 18 January, 15:29
    0
    symbol : Ca

    atomic number : 20

    - Calcium is a silvery-white, soft metal that tarnishes rapidly in air and reacts with water. Calcium metal is used as a reducing agent in preparing other metals such as thorium and uranium. It is also used as an alloying agent for aluminium, beryllium, copper, lead and magnesium alloys.

    Explanation:

    calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air ... It is the fifth most abundant element in Earth's crust and the third most abundant metal, after iron and aluminium.
  2. 18 January, 15:36
    0
    Calcium is a chemical element with the symbol Ca and atomic number 20.
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