The mass number would be different for different isotopes of the same element.
Since turquoise is a mineral rather than an element it does not have a symbol as a chemical element. If you wish more information about it you might look at its page on wikipedia.
Sp is not a symbol for a chemical element.
latinIf the letters of the chemical symbol do not line up with the English word, it is probably because the symbol refers to the latin name for the element. Some examples are Fe for iron and Pb for lead.
I assume you mean the small numbers written under the letters that are the element symbol. The one on the bottom left is the "Atomic Number" and is the number of Protons in the nueclus of the atom, this is what makes an element unique. 1H indicates that Hydrogen has only one proton and is "Atomic Number" one, these numbers are not normally written in unless it's relevent to whatever is being discussed. If the symbol is in a formula for a more complex molecule then there might be a number on the bottom right of a symbol - this is an indication of how many of this atom are in the molecule. so Water is H2O the two indicating there are two hydrogens in the structure. There are also numbers above, on the left the "Atomic Mass" being the total number of Protons and Neutrons in the element. Top right being the "Charge" if any (this would make it an Ion)
In the periodic table, numbers are not usually placed AFTER the symbol, but to the left and above and below. However, if the number appears AFTER the symbol, it usually tells you the atomic mass of the element. An example might be C-12 which refers to the isotope of carbon that has 12 protons and 12 electrons, and has an atomic mass of 12 amu.
Electrically neutral elements have equal numbers of electrons and protons. A stable element has equal numbers of protons and neutrons. Thus, the answer to the question ''Do Eletrically neutral element have equal numbers of electrons and neutrons?'' depends on the stability of the element i.e. if stable then yes and if unstable than might not.
Silicon is an element. Its atomic number is 14 and its symbol is Si .Silicon is an element. (However, silicone... note the final e... is a category of silicon-containing compounds, which might be the source of the confusion.)
WHICH numbers? The most prominent one is probably the average atomic mass, but it might be the atomic number.
the intensity of the current in the wires
CxHy is the general chemical formula of a hydrocarbon: This is an organic compound consisting entirely of hydrogen and carbon.Alkanes, alkenes, cycloalkanes, alkyne-based compounds and aromatic hydrocarbons (arenes) are different types of hydrocarbons
There is no symbol for "element", other than using a placeholder. For example, if you want to refer to the oxides of group II metals, you might use the generic formula "MO." Some common placeholders are M and X for a generic metal and nonmetal (especially a halogen) respectively. A and B are also pretty common for any kind of generic element.
There is no element with the symbol "tn" in the periodic table. The periodic table consists of 118 known elements, each with its own unique symbol.