Element cl protons neutrons electrons12/19/2023 ![]() Neutrons can be added or removed from an atom and the electrons around the atom really don't care that much. ![]() Neutrons don't change things greatly because they do not carry an electrical charge. Rare Earth Elements Basic Information Atomic Structure Isotopes Related Links Citing This Page. Adding or removing protons changes the number and arrangement of electrons in the outer shell which changes how that atom reacts with other atoms. The number of electrons in an atom's outer shell determines the atom's chemical properties. Each proton in an atom's nucleus must be balanced with a negatively charged electron in one of the 'shells' outside the nucleus. Why does changing the number of protons in an atom change which element that atom is but changing the number of neutrons doesn't? Protons carry a positive charge. 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 the nucleus).Īdding or removing a neutron from an atom's nucleus creates isotopes of a particular element. Since all atoms of chlorine contain 17 protons, chlorine-35 and chlorine-37 differ in the number of neutrons each one has. The mass number is a tally of the number of protons and the number of neutrons in an atom's nucleus. Total number of protons in the nucleus is called the. This negative chloride ion(Cl) has seventeen protons, eighteen neutrons, and. Chlorine is a chemical element with atomic number 17 which means there are 17 protons in its nucleus. The number after the name 'chlorine' is called the mass number. Here, the electron configuration of chloride ion(Cl) is 1s2 2s2 2p6 3s2 3p6. Adding or removing a proton from an atom's nucleus changes that atom's atomic number and creates a different element.Ĭhlorine-35 and chlorine-37 are both isotopes of the element chlorine. Differ: number of neutrons, masses similar: chemical properties, number of protons and electrons. All atoms which contain 17 protons are called chlorine atoms. In this video we’ll use the Periodic table and a few simple rules to find the protons, electrons, and neutrons for the element Chlorine (Cl). ![]() The number of protons an atom has, also known as the atom's atomic number, determines which element it is. Why aren't Chlorine-35 and Chlorine-37 two different elements?Ĭhlorine-35 and chlorine-37 are not different elements because an atom of chlorine-35 and an atom of chlorine-37 each contain the same number of protons. ![]()
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