What are the mass and the atomic number for the anion of Cl 35?
To determine the mass and atomic number of the anion of Cl 35, we need to understand the concept of atomic number and isotopes.
The atomic number (Z) represents the number of protons in the nucleus of an atom. In the case of chlorine (Cl), the atomic number is 17 because it has 17 protons.
The mass number (A) represents the sum of protons and neutrons in the nucleus. The standard isotope of chlorine, Cl-35, has 17 protons and 18 neutrons, giving it a mass number of 35.
Now, when chlorine gains an electron and becomes an anion, it forms Cl-1. This means that the anion, Cl-1, retains the same atomic number (17) but now has an extra electron compared to the neutral chlorine atom.
To summarize:
Atomic number (Z) of anion Cl-1 = 17
Mass number (A) of anion Cl-1 = 35
I hope this explanation helps!