An element, E, has the electronic configuration 1s22s22p63s2p3. The reaction of E with a halogen…

Chemistry JAMB 1993

An element, E, has the electronic configuration 1s22s22p63s2p3. The reaction of E with a halogen X can give?

  • EX3 and EX5 checkmark
  • EX3 only
  • EX5 only
  • EX2 and EX3

The correct answer is: A

Explanation

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