  The mass number (total number of protons and neutrons) of copper is 64 and the atomic number (number of protons) of copper is 29. The number of electrons is the same as â¦ the number of protons. So if the number of protons is 29, then so is the number of electrons. The mass number (total number of protons and neutrons) of copper is 64 and the atomic number (number of protons) of copper is 29. The number of electrons is the same as â¦ the number of protons. So if the number of protons is 29, then so is the number of electrons.
millionaire-a person whose material wealth is valued at more than a million dollars. have, rich person, wealthy person-a person who possesses great material wealth.
decade (s) (noun) , decades (pl). 1. A period of ten years; especially, one beginning with a year that ends in a 0, for example 2000 through 2999: One hundred years is equal to ten decades and one decade is equal to ten years..ecade (s) (noun) , decades (pl). 1. A period of ten years; especially, one beginning with a year that ends in a 0, for example 2000 through 2999: One hundred years is equal to ten decades and one decade is equal to ten years..