Question

write the electronic configuration of al3 and p3 - and draw schematic diagram of both
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Answer 1

• The atomic number of Al is 13 and its electronic configuration is 2,8,3. So, the electronic configuration of Al3+ is 2,8.

• The electron configuration for an atom of phosphorus is 1s22s22p63s23p3. In order to become an ion with a minus three charge, it must acquire three electrons—in this case another three 3p. Thus, the electron configuration for a P3– ion is 1s22s22p63s23p6.