What is the total number of electrons needed to completely fill all of the orbitals in an atoms second principal energy level
I believe the answer is "electron"
When atoms are in a solid state the atoms are compact and move very slowly
Answer:
Protons: C12= 12 Protons, C13=12 Protons and C14=12 Protons
#electrons= 12+0=12 electrons in all Carbon atoms Neutron: C12=0, C13= -1, C14= -2
Atomic mass of C12, C13 and C14= 12
C12, C13, and C14 are called “ISOTOPES”
Explanation: