How many electrons does copper have?

The ph of carrots are 5.0 how it is classified a.acidic b.basic c.indicator d.neutral

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true