Methyl isocyanate, shown as resonance structure 1, can also be represented by other resonance structures. Draw the next most important resonance contributor. Then add curved arrows to each structure to show delocalization of electron pairs to form the other structure. Include lone pairs of electrons, formal charges, and hydrogen atoms. You can add condensed hydrogens using the More menu, selecting +H and clicking on the carbon as many times as needed.

Solution :

Structure I

The formal charge on both Carbon (C) atom is = 4 valance - bonds = 0

Formal charge (O) = 6 V.E - 2 bonds - 4 non bonding electrons = 0

Formal charge on (N) = 5 V.E - 3 bonds - 2 non bonding electrons = 0

F.C. on H = 1 V.E. - 1 bond = 0

Overall charge on the molecule = 0 charge

Structure II

Formal charge on both C atom = 4 valence - 4 bonds = 0

Formal charge (O) = 6 V.E. - 1 bonds - 6 non bonding electrons = -1 charge

Formal charge on (N) = 5 V.E. - 4bonds - 0 non bonding electrons = +1 charge

F.C on H = 1 V.E. - 1 bond = 0

Overall charge on the molecule = +1 -1

                                                     = 0 charge

answer: you could do some invislibe ink.

explanation: i will tell you how to if u answer my question.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.