Question

Study the data in the table below and answer the questions. The letters do not represent the actual symbols of the elements.

Element	Atomic number	Boiling point °C
P	3	1333
Q	13	2470
R	16	445
S	18	−186
T	19	774

1. Select the elements that belong to the same    
   1. Group
   2. Element
2. Which element:
   1. Is a gas at room temperature? Explain.     
   2. Does not take an oxide    
3. Write the:
   1. Formula of the Sulphate of element Q   
   2. Equation for the reaction between elements P and R   
4. What type of bonding would exist in the compound formed when elements R and Q react? Give a reason for your answer.  
5. Select the most electropositive element 
6. Explain why the boiling point of element Q is higher than that of element P. 

Answer 1

Element	Atomic number	Boiling point °C
P	3   2.1	1333
Q	13  2.8.3	2470
R	16  2.8.6	445
S	18  2.8.8	−186
T	19  2.8.8.1	774

1.  
   1. P and T
   2. Q,R & S
2.  
   1. S, It's boiling point is below room temperature
   2. S
3.  
   1. Q₂(SO₄)₃
   2. 2P(s)+R(s)→P₂R(s)
4. Ionic
   Q transfers it's electrons to R when they react.
5. ​​​​​​​T
6. Q has strong metallic bond than P, it has more delocalised electrons hence strong metallic bond​​​​​​​