The cn– ion is widely used in the synthesis of organic compounds. what is the pattern of electron pairs in this ion? how many bonding pair(s) of electrons? how many lone pair(s) on the carbon atom? how many lone pair(s) on the nitrogen atom?

For the Lewis diagram of the cyanide ion, a figure is shown.

There are 3 pairs of bonding electrons. There is a one lone pair each for the carbon and the nitrogen atoms.

I hope I was able to answer your question. Thank you!

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.