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Sanvi Grade: 10
        Why cl35 nd cl37 are not different in their chemical properties?
one year ago

Answers : (2)

19 Points
Because chemical properties of an element does not depend on atomic mass but on atomic number.
Also our modern periodic table says that physical and chemical properties of an element are the basic functions of their atomic number.
one year ago
dolly bhatia
105 Points
										Chlorine-35 and chlorine-37 are not different elements because an atom of chlorine-35 and an atom of chlorine-37 each contain same number of protons. Number of protons an atom has, also known as atom’s atomic number, determines which element it is. All atoms that contain 17 protons are called chlorine atoms. Adding or removing a proton from an atom’s nucleus changes that atom’s atomic number and creates a different element.Chlorine-35 and chlorine-37 are both isotopes of the element chlorine. The number after the name chlorine is called the mass number. Mass number is a tally of the number of protons and number of neutrons in an atom’s nucleus. Since all atoms of chlorine contain 17 protons, chlorine-35 and chlorine-37 differ in the number of neutrons each one has. An atom of chlorine-35 contains 18 neutrons (17 protons + 18 neutrons = 35 particles in the nucleus) while an atom of chlorine-37 contains 20 neutrons (17 protons+20 neutrons = 37 particles in nucleus).Adding or removing a neutron from an atom’s nucleus creates isotopes of a particular element. Why does changing the number of protons in an atom change which element that atom is but changing number of neutrons does not? Protons carry a positive charge. Each proton in an atom’s nucleus must be balanced with negatively charged electron in one of the ‘shells’ outside the nucleus. Number of electrons in an atom’s outer shell determines atom’s chemical properties. Adding or removing protons changes number and arrangement of electrons in outer shell which changes things greatly because they do not carry an electrical charge. Neutrons can be added or removed from an atom and electrons around the atom really don’t care that much.
one year ago
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