Structure of the Atom (1)

Nucleon number

Number of protons + Number of neutrons

Number of protons for oxygen

8

Electron arrangement of carbon [Number of electrons for carbon = 6]

2.4

Number of protons for sodium

11

Number of electrons for chlorine

17

Number of electrons for potassium ion

18

Maximum number of electrons for the second shell

8

Symbol for the boron element

B

Symbol for the beryllium element

Be

Number of protons for nitrogen

7