Material Science Part 2

Proton and Electron Charge

• 1.60x10^-19 C

• 1.90x10^-19 C

• 1.60x10^-16 C

• 1.90x10^-16 C

Atom Mass is equal to

• Proton plus Electron

• Proton plus Neutron

• Proton plus neucleus

• Proton plus Proton

Avogadro's number

• 6.032x10^23

• 6.203x10^23

• 6.023x10^23

• 6.230x10^23

Atomic Model: Electron revolve around the atomic neucleus.

• Mechanical Wave

• Bhor Model

• Bohr Model

• Wave mechanical

__________ is determined by each orbitals at discrete energy level.

• Quantum Number

• Valence Electron

• Orbitals

• Subshell

M shell

• n=3

• n=4

• n=2

• n=1

Aluminum has 13 electron, its electron configuration:

• 1s^2 2s^2 2p^6 3s^2 3p^1

• 1s^2 2s^2 2p^6 3s^2 3p^3

• 1s^2 2s^2 2p^5 3s^2 3p^1

• 1s^2 2s^2 2p^6 2s^2 3p^1

The outer most layer of electron in an atom

• Principal Electron

• Subshell Electron

• Sublevel Electron

• Valence Electron

Argon has 18 electron and its electron configuration is 1s^2 2s^2 2p^6 3s^2 3p^6, find the valence electron.

• 3p^6

• 3s^2 3p^6

• 2p^6 3s^2 3p^6

• 2p^6 3s^2

In periodic horizontal rows are called ___________.

• Group

• Period

• Transition metal

• Electropositivity