An element E has the electronic configuration 1... - JAMB Chemistry 1993 Question
An element, E, has the electronic configuration 1s22s22p63s2p3. The reaction of E with a halogen X can give?
A
EX3 and EX5
B
EX3 only
C
EX5 only
D
EX2 and EX3
correct option: a
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