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The chemical compound C3H3 has two element in it: Carbon and Hydrogen. In one molecule of this compound there are 6 atoms: 3 Carbon atoms and 3 Hydrogen atoms. Both elements in this compound, Carbon and Hydrogen are classed as other nonmetals. However this compound does not exist 'in real chemical life', it's a fantasy formula.
The meaning is that only one atom of this element exist in the molecule. Example: sodium chloride - NaCl.
The general formula of linear alkanes is CnH2n+2. If an alkane with 125 carbons exist (I don't know) the chemical formula will be C125H252 and the name pentacosehectane.
The atoms of a chemical element can exist in different types. These are called isotopes. They have the same number of protons (and electrons), but different numbers of neutrons. Different isotopes of the same element have different masses.
An atom is the smallest piece of an element that can exist as that element. A molecule is a joining of two or more atoms in a chemical bond. There can be two of the same type of atoms in a molucule, as in a molecule of oxygen, 02.
Ba(OH)2 has 2 oxygen atoms. It is the chemical formula for barium hydroxide.
Ununoctium exist as an artificial chemical element.
Every mineral has a strict chemical formula. Although, practically the atoms or ions are not positioned perfectly to give the formula, hence they exist as mixtures.
Carbon is not a molecule; it is an element. An element is a substance containing only one type of atom. Carbon molecules are collections of carbon atoms. No chemical element is "good" or "bad"; they just exist.
It means that only one atom of the element exist in a single molecule of the compound. For example, Sodium sulfate, Na2SO4 , has 2 sodium atoms, 1 sulfur atom and 4 oxygen atoms. It is supposed to be Na2S1O4, but the former is more commonly used.
Yes: Atoms of krypton almost always do exist independently of chemical bonding to any other atoms.
Most chemical compound names are taken from what and how many atoms that they are made of. For instance, diphosphorus decoxide is di- (2) phosphorus dec- (10) oxide, or, P2O10.