Unit 1 Periodic Table/electron config

Who invented the Periodic Table?

• Mendeleev

• Bohr

• Lewis

• Democritus

a grouping of elements based on similar properties, arranged by columns in the periodic table; also known as a group

• family

• period

• row

• isotope

Atoms with similar properties are most likely located...

• in the same period.

• in the same group.

• in different periods.

• to the right and left of each other.

The distance between nucleus and outermost shell occupied electron

• Atomic Radii

• Ionization Energy

• Electronegativity

• Electron Afinity

• Oxidation Number

The tendency of an atom to attract a shared pair of electrons

• Atomic Radii

• Ionization Energy

• Electronegativity

• Electron Afinity

• Oxidation Number

Which element has bigger atomic radii?

• Beryllium is bigger than Fluorine

• Oxygen is bigger than Sulphur

• Litihium is bigger than Sodium

• Phosphorus is bigger than Bromine

Beryllium is in group number______.

• Group 2

• Group 3

• Group 4

• Group 7

Which element is most likely to have six electrons in its 4th energy level?

• Oxygen (O)

• Selenium (Se)

• Krypton (Kr)

• Potassium (K)

What electron configuration matches an oxygen atom?

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵

• 1s²2s²2p⁴

• 1s²2s²2p⁶

• 1s²2s²2p⁶3s²3p⁶4s²3d¹

Identify the Electron Configuration for Aluminum (Al)

• 1s² 2s² 2p⁶ 3s² 3p¹

• 1s² 2s² 2p⁶ 3s² 3p³

• 1s² 2s² 2p⁶ 3s² 4p¹