Structure of the Atom (3)

Chemistry

Not quite remember

I easily remember

Nucleon number of chlorine

The number of electrons is the same with the number of protons

Because atoms are neutral

The proton number of an aluminium atom that has 13 protons

Proton number = number of protons = 13

Nucleon number of an aluminium atom that has 13 protons and 14 neutrons

Nucleon number = proton number + number of neutrons = 13 + 14 = 27

Number of electrons of potassium atom that has 19 protons

Number of electrons = number of protons = 19

Number of neutrons in a potassium atom that have 39 nucleon number and 19 protons

Number of neutrons = nucleon number – number of protons = 39 – 19 = 20

Standard representation of an atom

Electron arrangement in shell of atomic structure (1)

Electrons of an atom orbit around the nucleus in their respective shells

Electron arrangement in shell of atomic structure (2)

Electrons will fill the shell closest to the nucleus first

Electron arrangement in shell of atomic structure (3)

When the shell closest to the nucleus is full, electrons will fill the next shell

Report this flashcard