What is the r. a.m. value of copper (cu)?
a. 34.5 amu b. 63.5 amu c. 29 amu d. 29/12 of carbon-12

63.5 amu

Explanation:

Answer via Educere/ Founder's Education

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.