Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Question (Clicker) Specify the number of electrons held in the energy levels 1-4 for an atom of neon (Ne). 1 A) Level 1: 2 Level 2: 2 Level 3: 6 Level 4: 0 B) Level 1: 1 Level 2: 2 Level 3: 4 Level 4: 3 C) Level 1: 2 Level 2: 8 Level 3: 0 Level 4: 0 Question (Clicker) Specify the number of electrons held in the energy levels 1-4 for and atom of sodium (Na). 2 A) Level 1: 2 Level 2: 2 Level 3: 6 Level 4: 1 B) Level 1: 2 Level 2: 8 Level 3: 1 Level 4: 0 C) Level 1: 1 Level 2: 2 Level 3: 4 Level 4: 4 Question (Clicker) Which of the following gives the correct total number of electrons and the number of valence electrons for a neutral Magnesium (Mg) atom? 3 A) Total = 12, Valence = 2 B) Total = 12, Valence = 12 C) Total = 12, Valence = 10 D) Total = 10, Valance = 2 Question (Clicker) For magnesium, which energy level holds the valence electrons? 4 A) 1 B) 2 C) 3 D) 4 Question (Clicker) There is something special about having 8 valence electrons. Elements that have 8 valence electrons are very stable and unreactive. Which of the following elements has 8 valence electrons? 5 A) Neon (Ne) B) Fluorine (F) C) Oxygen (O) D) Sulfur (S) Question (Clicker) Which of the following is the correct formula for the ionic compound that forms between sodium ions and oxide ions. 6 A) NaO B) Na2O C) NaO2 D) Na2O2 Question (Clicker) Which of the following general statements are true about metals and nonmetals approaches to adhering to the octet rule. 7 A) Metals look for ways to lose their valence electrons, while nonmetals look for ways to gain additional valence electrons. B) Both metals and nonmetals look for ways to lose valence electrons. C) Both metals and nonmetals look for ways to gain additional valence electrons. D) Metals look for ways to gain additional valence electrons, while nonmetals look for ways to lose their valence electrons. Question Name each of the following compounds: 8 A) Li2O B) N2O C) MgCl2 D) PbCl4 Question Draw the electron dot, line-bond, condensed, and skeletal structural formulas for 2-amino-propanoic acid (alanine): H2N H O C C CH3 9 OH Question (Clicker) Which answer correctly assigns the formal charges to the labeled atoms in alanine: A) B) C) A 0, B 0, C 0, D 0 A 1+, B 1-, C 1-, D 1+ A 1-, B 0, C 1+, D 0 A H H H B O N C C A 1+, B 0, C 1-, D 0 O H H D) C C D H H The amino acid alanine 10 Question Identify the polar covalent bonds in the metabolite glyceraldehyde-3-phosphate O H C H C O H O H C H O P O H 11 O H Question (Clicker) Which of the following molecules is polar? A) F C C F H B) F C F H H F C C) C F H F F C F 12 F