Nitrogen

Firstly, N2 is treated sometimes as an inert gas as it is used to create an inert atmosphere so that no reactions take place. But nitrogen has many compounds as it is more chemically reactive than helium or any other inert gases. Its compounds: e.g. Ammonia, Nitric Acid etc. More on: http://en.wikipedia.org/wiki/Nitrogen

Lithium is altogether a bigger element than hydrogen. Hydrogen is the smallest element, and lithium is listed later on the periodic table, so lithium's radius is just plain bigger than hydrogen.

Antoine Coefficients for Nitric acid are

A=6.6368

B=1.406

C= -52.15

range 274/376 (K)

reference :- Vapour Pressure and Antoine Constants for Nitrogen Containing compounds

It gains three, loses five, or shares pairs of electrons

This temperature is - 210 0C.

It goes back into the soil.

Because the nitrogen in the air is in a form not usable to animals and plants. The only way animals get nitrogen to build protein and nucleic acid is by eating it. This is usually through plants, which get there nitrogen from the soil. They get it from the soil because bacteria in the soil turn the atmospheric nitrogen into a usable form.

In a water ecosystem cyanobacteria (a.k.a. blue-green algae) transform the nitrogen from the atmosphere into usable forms of nitrate

When the animals breathe in nitrogen it goes into their bodies so when they die and decompose the nitrogen they breathed in is now in the soil and also when they fertilize on the land.

Nitrogen compounds known as Nitrates found in the soil

N2

plants take in nitrogen compounds through their roots.

Nitrogen is the most abundant element in the Earth's atmosphere. Bacteria in the soil 'fix' the nitrogen gas into compounds which can be taken in by plants; the plants get eaten by animals & they use the nitrogen to make proteins.

wcovalency means the max number of electron an atom can share with others.

nitrogen can share 5 but due to the absence of d orbital it can only share 4.

therefore the actual covalency in 4.

Hydrogen and Oxygen are essential for life because of the tasks they preform. Hydrogen, which is taken in through H2O as well as H2, is used for the transfer of energy for many vital systems. Oxygen is used for much of the same thing; transferring sugars to muscle fibers and vital organs.

Yes

dry ice −56.4 °C and liquid nitrogen is −196 °C

N=3

I=2.6

You do the math.

3<2.6x3

what are the chemical properties of nitrogen

As of 2010, the Bose-Einstein condensate state of matter has only been achieved in temperatures of 10-7 K in many alkali and alkaline earth metals' isotopes.

They include: 7Li, 23Na, 39K, 41K, 85Rb, 87Rb, 133Cs, 52Cr, 40Ca, 84Sr, 86Sr, 88Sr, and 174Yb

The symbol for nitrogen is N.

because these 4 elements that are listed are the most common elements on planet earth. most percentage of the eart is made of there 4 elements but not all some elments like iron are also there but a extremly small percentage

One mole of atoms of an element is equal to the atomic mass of that element expressed in grams.

Nitrogen-14

so one mole of nitrogen weighs 14 g

molecules of nitrogen bounce off from each other and don't stick together