The hydrogen phosphide (syn.: phosphine, phosphane) has the chemical formula PH3.
PCl3
You just need to count them. The first part of the formula (CH3) tells us that there are 3 hydrogen atoms present. In the second part of the formula, there is a fourth hydrogen atom. Therefore, one molecule has 4 hydrogen atoms.
600 atoms there are 3 atoms of hydrogen per ammonia molecule
Phosphorus and fluorine. Each phosphorus atom is bonded to three fluorine atoms.
NH3
There are three hydrogen, one phosphorus and four oxygen atoms in H3PO4. Phosphoric acid is a colourless and odourless liquid.
PCl3
There are 4 atoms - three lithium (Li) atoms and one phosphorus (P) atom.
Probably, thhere are three elements hydrogen, phosphorus and oxygen
In the formula CH3O2OH, there are one atom of carbon, three atoms of oxygen, and four atoms of hydrogen. (This is a strange way of writing the formula!)
There will be three hydrogen atoms per nitrogen atom, forming the compound ammonia with formula NH3.
As 3H3PO4 , there are 9(nine) hydrogen atoms. 3H3PO4 means that there are 3 (three) molecules of phosphoric acid. ; 3H3PO4 = H3PO4 + H3PO4 + H3PO4 However, as one molecule of phosphoric acid, there are only 3 (three) atoms of hydrogen present. The structure of phosphoric acid (as best I can show it is ;_ P(=O) (-OH)3 That is one phosphorus atom double bonded to one oxygen atom, and three hydroxide groups directly bonded to the phosphorus.
Ammonia contains hydrogen atoms. There are 3 hydrogen atoms.
"HS" as written is not the formula for any chemical substance, and, considered as a hypothetical formula, does not have three atoms of hydrogen but rather only one, as shown by the absence of an explicit subscript immediately after the atomic symbol for hydrogen. "HS-1" is a proper formula for an anion, the hydrogen sulfide anion, but again its contains only one hydrogen atom.
You just need to count them. The first part of the formula (CH3) tells us that there are 3 hydrogen atoms present. In the second part of the formula, there is a fourth hydrogen atom. Therefore, one molecule has 4 hydrogen atoms.
I am pretty sure it is PH5 P=Phosphorus (charge of three) H= Hydrogen (charge of one) Penta= charge of 5 since it's Pentahydride, penta=5(takes Phosphorus' place of charge on hydrogen) Since Hydrogen has a charge of one, it doesn't show on Phosphorus
There are three hydrogen atoms, as marked by the H3