For molecules with only one central atom, how many lone pairs on ...

[nmorano1]

For molecules with only one central atom, how many lone pairs on the central atom guarantees molecular polarity?
 
  A) 1
  B) 2
  C) 1 or 2
  D) 3
  E) 1 or 3

Question 2

When the following equation is balanced, the coefficient of water is ________. K (s) + H2O (l)  KOH (aq) + H2 (g)
 
  A) 1
  B) 2
  C) 3
  D) 4
  E) 5

Question 3

Which one of the following is the formula of hydrochloric acid?
 
  A) HClO3
  B) HClO4
  C) HClO
  D) HCl
  E) HClO2

[mmpiza]

Answer to Question 1

A

Answer to Question 2

B

Answer to Question 3

D