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| Atomic symbol | Atomic Number | Protons | Neutrons | Electrons | Atomic mass |

|---------------|---------------|---------|----------|-----------|-------------|
| ___ | 11 | __ | __ | __ | 24 |

1 answer

To fill in the missing information for the atomic symbol, protons, neutrons, electrons, and atomic mass, let's analyze the given atomic number (11) and atomic mass (24).

  1. Atomic Symbol: The atomic number 11 corresponds to Sodium (Na).
  2. Protons: The number of protons is equal to the atomic number, which is 11.
  3. Neutrons: To find the number of neutrons, we can use the formula: \[ \text{Neutrons} = \text{Atomic Mass} - \text{Protons} \] So, \[ \text{Neutrons} = 24 - 11 = 13 \]
  4. Electrons: In a neutral atom, the number of electrons is equal to the number of protons, which is 11.

Now, filling in the table:

| Atomic symbol | Atomic Number | Protons | Neutrons | Electrons | Atomic mass | |---------------|---------------|---------|----------|-----------|-------------| | Na | 11 | 11 | 13 | 11 | 24 |