Question

complete the table to determine the nuclear symbol for this neutr
nuclear symbol subatomic particles
protons: 4
neutrons: 5
electrons: 4
to which element does this atom belong?

Explanation:

Step1: Recall element identification rule

The number of protons (atomic number, \(Z\)) determines the element. \(Z = \text{number of protons}\).

Step2: Identify atomic number

Given protons \(= 4\), so atomic number \(Z = 4\).

Step3: Find element with \(Z = 4\)

The element with atomic number 4 is Beryllium (Be). Also, mass number \(A=\text{protons}+\text{neutrons}=4 + 5=9\), so nuclear symbol is \(\ce{_4^9Be}\).

Answer:

Nuclear symbol: \(\boldsymbol{_4^9Be}\) (or \(\ce{_4^9Be}\)); Element: Beryllium (Be)