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That's a total of 33 valence electrons. So I want the total number of electrons … C = 4. An atom, which is the fundamental unit of an element, contains an equal number of electrons and protons. On the left, the chlorine atom has 17 electrons. Chlorine is an element that belongs to Group7A in the periodic table. Cl = 7 x 3. Each Cl has 3 lone pairs for a total of 12 lone pairs. How many valence electrons does one chlorine (Cl) atom have? Octet rule has its limits and many exceptions, \$\ce{ClF3}\$ is a typical example of hypervalent molecules. The 7 electrons that are found in the valence shell are the electrons used to bond with the other atoms. Based on the periodic table the , the atomic number (Z) of chlorine is 17. Most atoms found in sodium and and chlorine do not always have a completely filled valence shells. B. If I want to figure out how many valence electrons chlorine has, I have to look for the electrons in the outermost shell, or the outermost energy level. This means that chlorine has 7 electrons in its valence shell of electrons. The names for positive and negative ions are pronounced CAT-eye-ons and ANN-eye-ons, respectively. The four P-Cl bonds use 8 electrons. How many electrons do carbon and oxygen share? Cloride is a chlorine atom, which has found that last electron and added it to the outermost valence shell to become stable. The chemical element chlorine has 17 electrons, 17 protons and 18 neutrons. We just add the valence electrons of each atoms involved. The atomic number of Cl is 17 and its simple electron arrangement is 2, 8, 7 …The region containing 7 electrons is called valence shell and remaining 10 electrons constitute core electrons…Thus Cl has core of Ne… This makes chlorine's valence shell incomplete, and the atom attracts "loose" electrons to this shell to complete it, so the atom can be stable. H = 1----- 26 electrons. Each Cl has 7 valence electrons. Which property of covalent compounds is most useful in making backpacks? 7 (Seven) Which electron dot diagram shows the bonding between 2 chlorine atoms? Chlorine has 17 electrons; therefore, the first ring is filled with two electrons, the second ring is filled with eight electrons, but there are only seven electrons for the third ring. \$\begingroup\$ "Every element wants 8 valence electrons" is just a simplified description for people to get started with chemistry. Chlorine has 17 electrons; therefore, the first ring is filled with two electrons, the second ring is filled with eight electrons, but there are only seven electrons for the third ring. 4 (Four) Nylon is a "big" covalent molecule used to make backpacks. If I want to figure out how many valence electrons chlorine has, I have to look for the electrons in the outermost shell, or the outermost energy level. P has 5 valence electrons. 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