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An element X with electronic configuration 2,8,2 ionises to a configuration 2,8 when it combines...

An element X with electronic configuration 2,8,2 ionises to a configuration 2,8 when it combines with another element Y of configuration 2,8,7
1) state the type of bonding formed between the two element
2) write a simple ionic equation to represent the ionization of X
3) How many atom(s) of Y are needed for the combination?
4) name one element that X could with in ratio 1:1?

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