Chemical-Bonding-Atomic-Structure-PT-Properties-Part2

16. 1. Ionic bonds are formed between:
    

• 16. A. Two metals                                                            
                                                        

• 16. B. Two nonmetals  

• 16. C. Metal and nonmetal

• 16.   D. Nonmetal and metalloid

16. 2. Which type of bond involves the sharing of electrons?
    

• 16. A. Ionic  

• 16.                             B. Metallic                                           

• 16. C. Covalent   

• 16. D. Hydrogen

16. 3. Which of the following compounds has ionic bonding?
    

• 16. A. H₂O       

• 16. B. CO₂          

• 16.                                               C. NaCl                             

• 16. D. CH₄

16. 4. A covalent bond where two pairs of electrons are shared is called a:
    

• 16. A. Single bond                                                            
                                                     

• 16. B. Double bond          

• 16. C. Triple bond

• 16. D. Metallic bond

16. 5. Metallic bonding is best described as:
    
    
    

• 16. A. Sharing of electrons between nonmetals
      

• 16. B. Transfer of electrons

• 16. C. A sea of delocalized electrons around metal cations

• 16. D. Electron pairing between metal and nonmetal

1. 6. Which subatomic particle has a negative charge?
   

• 1. A. Proton                                                  

• 1. B. Neutron    

• 1. C. Electron                  

• 1. D. Positron

1. 7. What is the mass number of an atom with 11 protons and 12 neutrons?
   

• 1.          A. 11                               

• 1. B. 23                          

• 1. C. 12                               

• 1. D. 22

1. 8. The nucleus of an atom contains:
   

• 1. A. Protons and electrons                                          
      

• 1. C. Protons and neutrons

• 1. B. Electrons and neutrons                                    

• 1.    D. Only electrons

1. 9. Which scientist proposed the planetary model of the atom?
   

• 1. A. Dalton   

• 1. B. Thomson   

• 1. C. Rutherford    

• 1.                                                       D. Bohr

1. 10. The atomic number of an element is equal to:
                             
                                 

• 1. A. Number of electrons   

• 1. B. Number of protons  

• 1. C. Number of nucleons

• 1. D. Number of neutrons