Phosphorus is only present in a phosphorous but not in chitin so your answer is Phosphorus :)
Chitin is actually a polysaccharide. While the number of monomers of N-acetyl-D-glucosamine that makes up chitin is unspecified, it is assumed to be greater than 2 in order to make it a proper polysaccharide. Disaccharides only have two saccharide subunits (examples are sucrose and maltose).
The smallest element on the Periodic Table is Hydrogen. It has only 1 electron in 1 electron shell and 1 proton in it's nucleus.
Hydrogen it depends on the other element if it is part of a compound
The atomic number in an element is equal to the number of protons in an element. For example, Hydrogen has an atomic number of 1 and 1 proton.
There is one atom of that element in the molecule.
1 Na and 1 Cl
Chitin build up fungi's cellwall.It is a nitrogen containing carbohydrate.
There is only 1 phospholipid bilayer that separates the stroma from the thylakoid lumen.
It is the number of particles - atoms or molecules - that are present in 1 mole of the element or compound.
Copper has 29 electrons.Chlorine has 17 electrons.
Neon is a rare gaseous element. It is present in the atmosphere to the extent of 1 part per 65,000 of air. Neon is obtained by liquefaction of air and separation using fractional distillation.
The element with 1 electron in period 1 would be hydrogen.
Grashopper do not actually have bones at all, as they possess what is called an exoskeleton. This exoskeleton is on the outside of the grasshopper and is made of various proteins, lipids and chitin.
Sodium chloride is a lattice. There are only two elements.
Nitrogen is the most present gas in air. It sits at about 78% nitrogen, 21% oxygen and 1% other gases (which include CO2)
Yes, they are a single element in the ratio of 1. Other metallic substances are actually alloys, and the components may be present in a range of ratios.
It is an Element