Periodic Table

Q: Layers of carbon atom in graphits are held by:

(a) :  Van der Weaal's forces
(b) :  Free eletrons
(c) :  Double bond
(d) :  Covalent bond
(e) :  None of the Above
Answer:  Covalent bond
Explanation:  

Q: Which element in the table is likely to be a transition metal? Element ,Melting ,Colour of chloride

(a) :  A , High ,Blue
(b) :  B, Low, Green
(c) :  C, High , White
(d) :  D, Low ,White
(e) :  None of the Above
Answer:  C, High , White
Explanation:  

Q: Which of the following is not possible molecule as written?

(a) :  OF₂
(b) :  SF₄
(c) :  OF₄
(d) :  O₂F₂
(e) :  None of the Above
Answer:  O₂F₂
Explanation:  

Q: Which of the following would you expect to have the highest electronegativity?

(a) :  Boron
(b) :  Carbon
(c) :  Aluminium
(d) :  Silicon
(e) :  None of the Above
Answer:  Silicon
Explanation:  

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