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The electronic configuration of three elements X, Y and Z are as follows. X = 2, 4, Y = 2, 7, Z = 2,1 Which two elements will combine to form an ionic compound and write the correct formula,

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The electronic configuration of three elements X, Y and Z are as follows. X = 2, 4, Y = 2, 7, Z = 2,1 Which two elements will combine to form an ionic compound and write the correct formula,






 
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