N4Se4 is not a valid chemical formula for any known compound. Nitrogen (N) and selenium (Se) can form various compounds, but N4Se4 does not correspond to any known chemical compound.
PB is an element. It is the chemical symbol for lead.
NH is a molecule composed of nitrogen (N) and hydrogen (H) atoms, not an element itself. Nitrogen and hydrogen are individual elements on the periodic table.
Ag is the chemical symbol for silver, which is an element. It is not a compound.
Hl is an element. It is the chemical symbol for the element helium on the periodic table.
AgNO3 is a compound, not an element. It is the chemical formula for silver nitrate, which is composed of the elements silver (Ag), nitrogen (N), and oxygen (O) combined in a fixed ratio.
Silicon is an element, not a compound or mixture. It is a non-metallic chemical element with the symbol Si and atomic number 14.
Nitrogen (N) is a chemical element.
NO!!! It is NOT an element. By the very fact that the formula is NH3 , tells, us that a molecule of ammonia contains nitrogen(N) and hydrogen(H) in COMBINATION; a COMPOUND.
It is a compound. You can clearly see it contains two elements: nickel (Ni) and nitrogen (N). The name of this compound is nickel III nitride.
The element for ammonia is nitrogen (N). Ammonia is a compound made up of one nitrogen atom and three hydrogen atoms.
Ammonia is a compound, specifically a molecular compound made up of one nitrogen atom and three hydrogen atoms (NH3).
N4Se4 is not a valid chemical formula for any known compound. Nitrogen (N) and selenium (Se) can form various compounds, but N4Se4 does not correspond to any known chemical compound.
element. Sulfur dioxide (SO2) is a compound
AIN is a compound. It is composed of aluminum (Al) and nitrogen (N) atoms in a 1:1 ratio. It is commonly known as aluminum nitride.
it is a compound
KCl is a compound not an element.