hydrogen!!by etenal lover@25!
Three elements: One Carbon (C) Two Hydrogens (H) One Oxygen (O)
Hydrogen (H) Helium (He) Lithium (Li) Beryllium (Be) Boron (B)
H is the symbol for hydrogen. The first of the elements.
Elements are listed by the number of protons they contain starting with Hydrogen which has one proton.
To make a list within a list, you will create another OL or UL element within one of the LI elements of the outer list.
"H" or Hydrogen is an element, there are no other elements in it because all elements are pure substances.
Water is a COMPOUND of two(2) elements, viz. Hydrogen(H) and Oxygen(O). These tqo elements are both found in the Periodic Table. The Periodic Table is a list of ELEMENTS, not compounds.
hydrogen (H) and helium (He)
From where we are, we can't see the list of choices or the six elements.We'll have to pass on this one.
The elements making up Cytosine are Nitrogen, Oxygen, Carbon, and Hydrogen.
The elements that make up oxygen are oxygen itself (O), hydrogen (H), carbon (C), neon (Ne), argon (Ar), and helium (He).
The elements are Carbon (C) Hydrogen(H) Oxygen(O)