3. Covalent/binary (not really sure)
4. Covalent
5. Ionic
6. Covalent
7. Acid 
8. Ionic
9. Acid
10. Ionic
        
             
        
        
        
Answer:             THREE<span> different isomers can be derived from ethylene if two hydrogen atoms are replaced by a fl uorine atom and a chlorine atom.
Explanation:                   When two Hydrogen atoms in ethylene (
C</span>
₂H₄) are replaced with Fluorine and Chlorine atom then the new molecular formula is 
C₂H₂FCl.
                    Compounds having same Molecular formula but different structural formula are called as Isomers.
                     First Isomer of C₂H₂FCl is 
1-chloro-1-fluoroethene, in which F and Cl at geminal position (attached to same Carbon atom).
                     Other two Isomers are 
Geometrical Isomers of 
1-chloro-2-fluoroethene, in which F and Cl at different carbon atom and having different position is space. The one in which both F and Cl at opposite side forms 
(<em>
trans</em>
)-1-chloro-2-fluoroethene and the one in which both are in same side is called as 
(<em>
cis</em>
)-1-chloro-2-fluoroethene.
 
        
             
        
        
        
Answer:I think this is right: 1. 6 2. 12 3. 4 4. In the middle 5. Carbon 1. The one on the right 2a. Beryllium 2b. Aluminium 
Explanation:The protons are the circles with plus signs and the black ones are nutrons. I looked on my periodic table for the rest.
 
        
             
        
        
        
Answer:
The number of lines possible for SO2 is 3
Explanation:
The following Procedure should be followed when calculating the number of vibrational modes:-
- Identify if the given molecule is either linear or non-linear 
 - Calculate the number of atoms present in your molecule
 - Place the value of n in the formula and solve.
 
SO2 is a non-linear molecule because it contains a lone pair which causes the molecule to bent in shape hence, The mathematical formula for calculating the number of non-linear molecule in a infrared region is (3n - 6) here n is the number of atoms in molecule.
hence for Sulphur Dioxide (SO2), n will be 3 
<u> Therefore, The number of lines possible for SO2 is  (3*3) - 6 = 3</u>
 
        
             
        
        
        
D. the student's conclusion shows experimental bias