Chemistry
The atom of aluminium is represented by 27Al13. State the number of :
(a) electrons
(b) protons
(c) neutrons
(d) the arrangement of electrons
in the different orbits or shells in one atom of aluminium.
Atomic Structure
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Answer
27Al13
Z = 13 , A = 27
(a) electrons = Z = 13
(b) protons = Z = 13
(c) neutrons = A - Z = 27 - 13 = 14
(d) the arrangement of electrons = K[2], L[8], M[3]
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