So, all the five chlorine atoms have zero formal charges.Īntimony atom: Valence electron for central Sb atom = 05 There are equal lone pair electrons and bonded pair electrons on chlorine atoms of the structure so let us just we can count the formal charge of only one chlorine atom.Ĭhlorine atom: Valence electrons for Cl = 07īonding electrons with Cl = 2 (one single bond) There is a formula to calculate formal charge on any atom in lewis diagram.įormal charge = (valence electrons – lone pair of electrons – ½ bonding electrons)įirst we should count the formal charge on all five chlorine atoms of SbCl5 lewis structure. The stability on any lewis diagram is more when atoms have less formal charges. So we conclude that the SbCl5 lewis structure does not obey the octet rule as the central antimony (Sb) atom has ten electrons means extended octet. Now the five chlorine atoms in the SbCl5 lewis structure has completed its octet as they all have eight electrons in its valence shell. SbCl5 lewis structure showing complete octet of chlorine and extended octed of antimony three lone pair of electrons for each five Cl atoms. Then the remaining thirty electrons means fifteen lone pair of electrons gets distributed in five Cl atoms i.e. Now, from the total fourty valence electrons of SbCl5 lewis structure ten electrons shared by central Sb atom in five bonding pairs with five Cl atoms. Then, all the remaining valence electrons should put on the chlorine atom till they have eight electrons to complete the octet. Here, the antimony atom is in extended octet as antimony has five Sb-Cl bonds means there are ten electrons in its outermost shell rather than eight electrons. SbCl5 lewis structure having five chlorine element as an outermost atoms and there is a need of eight electrons to complete the octet of chlorine atoms in its valence shell. Valence shell of any atom containing eight electrons is known as octet. SbCl5 lewis structure octet rule tell us about the completion of octet of outer atoms. Hence, total electronpairs = 40 ÷ 2 = 20 SbCl5 lewis structure octet rule Therefore, total electron pairs = total number of valence electrons ÷ 2 We have total fourty valence electrons and this value gets divided by two to count total electron pairs. Now we have to find the total electron pairs. SbCl5 lewis structure forming single bonds between antimony and chlorine So, total valence electrons for SbCl5 lewis structure = 5 (Sb) + 7×5 (Cl5) = 40 Therefore, Total valence electrons for antimony = 5 So antimony has five and the chlorine has seven valence electrons present on it. As the antimony element present on the fifteenth group (15 th group) of the periodic table and the chlorine element present on seventeenth group 17 th group) of the periodic table. So, count the valence electrons present on antimony atom and chlorine atoms.įor counting the valence electrons of any atom or element check its position in the groups of periodic table. count the valence electrons of each element present in the structure. It is quite easy to draw the SbCl5 lewis structure.įor drawing the SbCl5 lewis structure first most is to count the number of valence electrons present in the structure, i.e. SbCl5 lewis structure has ten bonding electrons and thirty non-bonding electrons. There is one antimony atom and five chlorine atoms are present the SbCl5 lewis structure. SbCl5 lewis structure consists of mainly two elements antimony and chlorine. Molecular geometry of SbCl5 is trigonal bipyramidal shape (in liquid).Īntimony pentachloride i.e. Molecular weight of SbCl5 is 299.0 g mol -1. Multiple bonds only form with some elements like oxygen (O), carbon (C), nitrogen (N), phosphorus (P) and sulphur (S) and rarely with Cl.Ĭhemical formula for antimony pentachloride is SbCl5. Sometimes the molecule forms double or triple bonds. every element have eight electrons in its outer orbit, except hydrogen which has only two electrons in its outer shell. Complete the octet of every element or atom by putting electron pair after bonding of atoms to each other i.e.If the ions are there then count the charges on it. First is to count or note the number of valence electrons of each element or atom present in the molecule or chemical compounds or ions.There are two main rules for drawing lewis structure of any molecule or chemical compound. Here, we are discussing about the SbCl5 lewis structure. It is corrosive to various tissue and some metals. SbCl5 liquid solidifies at 37 degree faraday. Human eyes and membrane of mucous get irritates from its fumes. SbCl5 is a liquid form compound looks like a reddish yellow fuming liquid having pungent smell. SbCl5 lewis structure contains one antimony (Sb) and five chlorine (Cl) atoms in its structure. SbCl5 is known as antimony pentachloride.
0 Comments
Leave a Reply. |