The element hydrogen is least massive as it has only one proton, one electron.
Hydrogen is the least massive element. It is found in group 1, period 1 on the periodic table.
In the right corner of the periodic table.
The periodic table doesn't show grams; and which grams ?
On the far left on the periodic table.
If new elements are placed, then they would be appended in the periodic table. It won't disturb existing periodic table.
The only thing it might mean would be number, but that is usually no. and not NO. NO would be nitrogen oxide (nitric oxide), but that would NOT appear in the periodic table, as it is a compound, and only ELEMENTS appear in the periodic table.
That would be Hydrogen, whose name means, (Make water).
The noble gases, column 18 or VIII of a periodic table, are the least reactive. However, in the last few decades, compounds of at least the heavier members of this group have in fact been made. Therefore, there is no longer any entire group on the periodic table that is totally unreactive chemically.
My answer for this would be Colour of the elements.
Oxygen is in the upper right side of the periodic table.
Elements in the periodic table that are similar to sulfur would be oxygen, and selenium
There are 117 elements on the periodic table, however, there is one blank spot that lies on the periodic table of elements, it has the atomic number of 117. If it were discovered, there would be 118 elements on the periodic table of elements.