Muscovite (n=1.56), or better known as mica, is a phyllosilicate mineral of aluminum and potassium. new industrial uses include being an insulator, usually for small electrical componenets. fabrication of divices with mica ofter require high precision on the determination of the mica thickness. if a mica sheet is suspended in air and reflected light shows gaps in the visible spectrum at 450, 525, and 630 nm, what is the thickness of the mica sheet?

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.