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Why are there always two Cl for every one Ca as in calcium chloride and how is it held together?
Wiki User
∙ 9y ago
Calcium atoms have the electronic configuration 2,8,8,2 so they react by losing 2 electrons. Chlorine is 2,8,7 so picks up one electron. Therefore each calcium ion is formed in conjunction with two chloride ions. The calcium ions are positively charged, and the chlorides are negative so the substance is held together by electrostatic attraction. This process is called ionic bonding.
Wiki User
∙ 9y ago
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