‘A chlorine atom has an atomic number of 17 and mass number of 35_ How many protons . does normal chlorine atom have? How many neutrons does normal chlorine atom have? How many electrons does normal chlorine atom have? D If the chlorine atom had single negative charge (CI ion). how and electrons – would the atom have? many protons, neutrons’
The Correct Answer and Explanation is:
To answer your question about the chlorine atom:
1. How many protons does a normal chlorine atom have?
The atomic number of chlorine is 17. The atomic number of an element tells you how many protons are in its nucleus. Therefore, a normal chlorine atom has 17 protons.
2. How many neutrons does a normal chlorine atom have?
The mass number of chlorine is 35. The mass number represents the total number of protons and neutrons in the nucleus. Since we know the atom has 17 protons, we can subtract that from the mass number to find the number of neutrons.
Number of neutrons = Mass number – Atomic number
Number of neutrons = 35 – 17 = 18
So, a normal chlorine atom has 18 neutrons.
3. How many electrons does a normal chlorine atom have?
In a neutral atom, the number of electrons equals the number of protons. Since chlorine has 17 protons, it will also have 17 electrons in its neutral form.
4. If the chlorine atom had a single negative charge (Cl⁻ ion), how many protons, neutrons, and electrons would the atom have?
When a chlorine atom becomes a Cl⁻ ion (which has a single negative charge), it gains one extra electron to balance the negative charge.
- The protons remain unchanged because they define the element, so it still has 17 protons.
- The neutrons remain unchanged because they are not affected by the charge, so it still has 18 neutrons.
- The electrons increase by one, so a Cl⁻ ion will have 18 electrons (17 electrons + 1 extra electron).
Summary:
- Normal chlorine atom: 17 protons, 18 neutrons, 17 electrons.
- Chlorine ion (Cl⁻): 17 protons, 18 neutrons, 18 electrons.
This is because the charge of the atom affects only the number of electrons, not protons or neutrons.
