The Living World 6th Edition by George Johnson, Jonathan Losos,William Ober,Claire Garrison

تمرين 3

Figure 3.10 This figure shows an oxygen atom forming covalent bonds with two hydrogen atoms. A carbon atom, like oxygen, has two electrons in its innermost shell, but only four electrons in its outermost shell. Using this water molecule as a guide, draw a diagram showing how carbon forms covalent bonds with four hydrogen atoms in a methane (CH 4 ) molecule.