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Question
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
Carbon [At. no. = 6, Mass no. = 12]
Solution
Structure of atoms:
Z is Atomic Number and A is the mass number
Carbon \[\ce{^12_6C}\]
Z = 6 = p = e
K L
e = 6 = 2, 4
A = p + n
12 = 6 + n
∴ n = 12 − 6 = 6
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