Answer to Question #297254 in Physics for Cathastrophy

Question

9. 19. In the ground state of a cobalt atom there are ___ unpaired electrons and the atom is ___. 

a. 3, paramagnetic

b. 2, diamagnetic 

c. 5, paramagnetic 

d. 0, diamagnetic 

10. 20. Which of the following bond is the strongest?

a. carbon – hydrogen bond 

b. carbon – carbon triple bond

c. carbon – nitrogen bond

d. carbon – carbon single bond 

11. 25. Saponification of fats needs a strong ________ to proceed to completion. 

a. halogen

b. acid 

c. catalyst

d. base 

12. 28. Which of the following elements can only form one bond (alkane) in a Lewis structure? 

a. Oxygen

b. Hydrogen

c. Carbon 

d. Aluminum 

13. 29. Which element will have 18 electrons in its Lewis dot symbol? 

a. Argon

b. Carbon 

c. Boron 

d. Phosphorus 

Answer 1

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