Electron arrangement

Negatively charged particles

• Neutrons

• Protons

• Electrons

• Atoms

Positively charged particles

• Neutrons

• Protons

• Electrons

• Atoms

First shell can include maximum

• 2

• 8

• 32

• 18

second shel labeled as

• K

• M

• L

• N

Number of shells is equal to

• Number of group of this element

• Number of period of this element

• Number of electrons of this element

2)1)

Which element?

• Na

• K

• Li

• H

2)8)

Which?

• Ar

• H

• O

• Ne

2)2) which?

• Be

• B

• Ba

• O

Electrons in outermost shell of the atom are called

• Electrons

• Valence electrons

• Charged electrons

5th shell can include

• 32 electrons

• 64 electrons

• 50 electrons

• 52 electrons