· To calculate the grams of an element in a compound, you need to find the molar mass of the element and the compound. · What element is on the 4th period on the periodic table that has 29 electrons? The number of electrons is not the key factor in determining an element, because ions can have more … · Chromium is denoted by the symbol Cr. It is a chemical element with atomic number 24. HC is not a standard chemical symbol. · Diamond is a pure element made up of carbon atoms arranged in a crystal structure. · The element that has the orbital configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p2 is Germanium (Ge). It could also be written as [Ar] 4s2 3d10 4p2. · To find the mass of an element in a chemical compound, you first need to determine the molar mass of the compound by adding up the atomic masses of all the elements present. … · Is coal an element or compound or a mixture? Coal is a mixture of organic compounds, mainly carbon, along with traces of other elements like hydrogen, sulfur, and nitrogen. · An element is composed of only one type of atom. Each element on the Periodic Table is defined by the number of protons in its nucleus, which determines its unique chemical … · O2 is a molecule made up of two oxygen atoms. Oxygen itself is an element, but when it combines with another oxygen atom to form O2, it is considered a molecule. · The symbol P is being used by the element Phosphorous, so Potassium's symbol is K, for it's latin name, kalium, which means "potash".