Write two different resonance forms for triphenylmethyl cation. Write the structure showing the positive charge at an ortho position.

Triphenylmethane cation is represented by many resonance structures.

Explanation:

The structure number 2 and structure number 4 in the series of resonance structures shown in the image are resonance structures in which the positive charge is at the ortho position.

Resonance structures are also called canonical structures. They help us to picture the actual structure of a molecule.

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.