Unformatted text preview: 2.2.2 15/7 N 2.2.3 Flourine has 9 electrons.1 electron is needed to fill the valence shell since the electron configuration is 1s^2, 2s^22, 2p^5 2.2.4 The elements in a row all have the same number of electron shells. In the columns, all the elements have the same number of electrons in their valence shells. 2.3.1 Each carbon atom has only three covalent bonds instead of four. 2.3.2 The atoms are held together by ionic bonds, which are formed by the attraction of oppositely charged ions. 2.3.3 Learning the shapes would be helpful because if you could synthesize molecules that mimic these shapes, you might be able to treat diseases or conditions caused by how the affected individuals aren’t able to synthesize the same molecules. 2.4.3 C6H12O6 + 6O2 --> 6CO2 + 6H2O + ATP. Glucose and oxygen react to form carbon dioxide and water that releases energy. Since we breathe in oxygen, we need it for this reaction to occur and since we breathe out carbon dioxide, it is a product of this reaction...
View Full Document
- Fall '08