To complete the information in your chart, let's understand the terms involved:
- Atomic number: This represents the number of protons in the nucleus of an atom. In this case, the atomic number is given as 17, which corresponds to the element Chlorine (Cl).
- Mass number: This is the sum of protons and neutrons in the nucleus. You mentioned that the number of protons is 17, and the number of neutrons is 18. Therefore, the mass number can be calculated as: \[ \text{Mass number} = \text{protons} + \text{neutrons} = 17 + 18 = 35 \]
- Number of electrons: In a neutral atom, the number of electrons is equal to the number of protons. Since you have 17 protons, there are also 17 electrons.
Now, let's fill in the missing information:
- Element symbol: Cl (Chlorine)
- Atomic number: 17
- Mass number: 35
- Number of protons: 17
- Number of neutrons: 18
- Number of electrons: 17
Here's the completed chart:
| Element symbol | Atomic number | Mass number | Number of protons | Number of neutrons | Number of electrons | |----------------|---------------|-------------|-------------------|--------------------|---------------------| | Cl | 17 | 35 | 17 | 18 | 17 |