Solved: Write Lewis structures for the following: (a) H2CO

Problem 8.48Write Lewis structures for the following: (a) H CO (both H ato2 are bonded to C), (b) H O , (c) 2 2 3-C26contains a CC bond), (d) AsO 3 , (e) H 2 (H3s bonded to O), (f) NH Cl. 2 Step-by-step solution Step 1 of 7 (a)To draw a Lewis structure for H CO (both H atoms connected to C) using following steps. 2First, sum of total valence electrons presents in the molecular formula, H CO. Here, carbon 2belongs to 4A group, so it has four valence electrons. Similar, oxygen has (6A group) sixvalence electrons will be 4 + 6 + (2 x 1) = 12Second, arrangement of atoms/connecting of atoms. In general, the central atom in thechemical formula is surrounded by remaining atoms. Here, the central atom is carbon. So, todraw a skeleton structure for the chemical formula H CO which as shown 2low:Third, add Lewis electron dots to complete the octets on each atom that bonded to the centralatom. Completing the octets around each H and O atom accounts for 10 electrons.Fourth, recall that total number of valence electrons is 12. Then place the remaining twoelectrons as double bond between C and O atoms complete their octets.\nThis structure indicates that each atom completes its octet. Therefore, the Lewis structure ofH CO is as follows: 2