there are 108 elements. most of them are metals.
The order of the periodic table is made according to the atomic weights of the elements. The number of protons and neutrons in the nucleus make the atomic weight. Protons make the elements in order of the periodic table.
including "unknown elements" there are 59 elements in half of the periodic table, not including them there is 55.5 Added: 92 natural elements/2 = 46 natural elements make up 1/2 periodic table.
It is named The PERIODIC TABLE. The periods being the horizontal rows The groups being the vertical columns.
NaI is the compound named sodium iodide made of the elements sodium (Na) and iodine (I). You will find the elements themselves on the periodic table, not the compounds they make.
There are 53 Elements in the Periodic Table.
To make study of elements easier.To classify elements.
The answer is Group 17 Halogens.
The elements that would be used to make table salt from its elements are sodium and chlorine.
118 elements.
"metals"
No they did not.
The order of the periodic table is made according to the atomic weights of the elements. The number of protons and neutrons in the nucleus make the atomic weight. Protons make the elements in order of the periodic table.
Sodium (Na) and chlorine (Cl) form to make table salt.
Sodium and Chlorine
table salt is made up of 3 elements that is Sodium(Na), Chlorine(Cl) and Iodine(I).
Yes, Dmitri Mendeleev made the Periodic Table of Elements, and interestingly enough, he did it without knowing all of the natural elements! As scientists discovered new elements, they realized the elements fit right into place on Dmitri's table.
including "unknown elements" there are 59 elements in half of the periodic table, not including them there is 55.5 Added: 92 natural elements/2 = 46 natural elements make up 1/2 periodic table.