Lewis structure for cacl2 First, determine the total number of valence electrons in the molecule. Calcium is in group 2 of the periodic table, so it has 2 valence electrons. Chlorine is in group 17, so it has 7 valence electrons. There are two chlorine atoms in CaCl2, so the total number of valence electrons is 2 (for calcium) + 7 (for one chlorine atom) x 2 (for the other chlorine atom) = 16 valence electrons. Next, write the symbol for the central atom, calcium, and place the other atoms around it. In CaCl2, calcium is the central atom and chlorine atoms are the surrounding atoms. CaCl2 Then, add enough electrons around each atom to reach a total of 8 electrons, which is the octet rule. The octet rule states that atoms are most stable when they have 8 electrons in their outermost energy level. Calcium already has 2 electrons, so we need to add 6 electrons around it to reach 8 electrons. Chlorine has 7 electrons, so we need to add 1 electron around it to reach 8 electrons. Ca^2- Cl- Cl- Since calcium has lost 2 electrons to achieve a stable octet, it has a charge of +2. Chlorine has gained an electron to achieve a stable octet, so it has a charge of -1. Finally, draw a single line between the central atom and the surrounding atoms to represent the covalent bond. In CaCl2, there are two covalent bonds between calcium and each chlorine atom. --- CaCl2 The Lewis structure for CaCl2 shows that calcium is the central atom, surrounded by two chlorine atoms. Each chlorine atom is bonded to the calcium atom by a single covalent bond, and each chlorine atom has a charge of -1, while calcium has a charge of +2. It is important to note that the Lewis structure is a simplified representation of the bonding and non-bonding electrons in a molecule. It does not show the actual three-dimensional shape of the molecule or the presence of lone pairs of electrons. However, it is a useful tool for understanding the bonding and charge distribution in a molecule. In summary, the Lewis structure for CaCl2 is determined by following the steps of counting the total number of valence electrons, writing the symbol for the central atom and placing the other atoms around it, adding enough electrons around each atom to reach a total of 8 electrons, and drawing a single line between the central atom and the surrounding atoms to represent the covalent bond. The Lewis structure for CaCl2 shows that calcium is the central atom, surrounded by two chlorine atoms, with each chlorine atom bonded to the calcium atom by a single covalent bond and each chlorine atom having a charge of -1, while calcium has a charge of +2. A Lewis structure, also known as an electron dot structure, is a visual representation of the valence electrons of an atom or molecule. It was developed by Gilbert N. Lewis in 1916 and is still widely used today to represent the bonding and non-bonding electrons in a molecule. CaCl2 Then, add enough electrons around each atom to reach a total of 8 electrons, which is the octet rule. The octet rule states that atoms are most stable when they have 8 electrons in their outermost energy level. Calcium already has 2 electrons, so we need to add 6 electrons around it to reach 8 electrons. Chlorine has 7 electrons, so we need to add 1 electron around it to reach 8 electrons.
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