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Consider three elements A B and C all of which have atomic numbers of less then 20. The atomic number of A is x, and the atomic number of B is three less than the atomic number of A
Element A forms cations with formula A+ and reacts with element C to form a solid substance with the formula AC
What is element A
Which group does element C belong to
Answers: 3
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Consider three elements A B and C all of which have atomic numbers of less then 20. The atomic numbe...
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