Physics – 5.1.2 The nucleus | e-Consult
5.1.2 The nucleus (1 questions)
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Nuclear Notation:
The nuclear notation for an atom is written as: AZX, where:
- A = Mass number
- Z = Atomic number
- X = Chemical symbol of the element
In this case, the nuclear notation for element Y is: 3517Y
Number of Electrons:
In a neutral atom, the number of electrons is equal to the number of protons. Therefore, element Y has 17 electrons.
Name of Element Y:
The element with an atomic number of 17 is Chlorine (Cl).