EVERYDAY SCIENCE

Detailed explanation-1: -In a neutral atom, the number of protons is equal to the number of electrons. In ³⁵Cl, 35 represents the mass number and the atomic number of Cl is known to be 17. This implies, the number of protons and electrons in ³⁵Cl is 17 (as ³⁵Cl is a neutral atom).

Detailed explanation-2: -For example, every chlorine atom has 17 electrons and 17 protons; its atomic number is 17. However, three out of four chlorine atoms weigh 35 amu (17 protons and 18 neutrons) and the fourth weighs 37 amu (17 protons and 20 neutrons). These are the isotopes of chlorine.

Detailed explanation-3: -Chlorine is an element with unique properties Chlorine has an atomic number of 17 and an atomic mass of 35.45, meaning that an atom of chlorine consists of 17 protons, 17 electrons, and 18 neutrons.

Detailed explanation-4: -Chlorine-35 is an element with an atomic number of 17. The atomic number is equal to the number of protons and electrons for a neutral atom. However, 35 Cl− has a negative 1 charge which means that there are more than 1 electron compared to the number of protons. Hence, there are 18 electrons in the ion.

Detailed explanation-5: -A neutral chlorine atom, for example, contains 17 protons and 17 electrons.