How many lone pairs of electron are there on the central ...
How many lone pairs of electron are there on the central atom of the H2O molecules?
1
2
3
4
Correct answer is B
In a water molecule, oxygen is bonded to two hydrogen atoms. Leaving oxygen with four electrons which pair up with one another to form two lone pairs of electrons.
Synthetic rubber is made by polymerization of? ...
The idea of planetary electron was that of ...
The mass of potassium hydroxide required to make 300.ocm3 of 0.4 moldm-3 solution is {KOH = 56.0}...
Consider the following reaction equation: \(Br_{2} + 2KI \to 2KBr + I_{2}\). Bromine is acting as...
Which of the following compounds would react rapidly with bromine? ...
What is the chemical symbol for Chromium? ...
Which of the following equations does not illustrate correctly one of the reactions of chlorine? ...
If glucose is heated with concentrated tetraoxosulphate(vi)acid, it will be dehydrated to?...
Which of the following processes takes place during electrolysis? ...