CHM153/2251

What is incorrect about this orbital diagram?

• Both arrows in the 2p box should be pointing up

• There should be 1 electron (arrow) in the first 2p box and one in the 2nd 2p box

• All the arrows should be pointing up.

• There is nothing incorrect

How many electrons can the d sublevel hold?

• 10

• 6

• 14

• 2

What is the noble gas configuration for beryllium?

• [He]1s²

• [He]2s²

• [Li]2s¹

• [Li]2s²

What is the noble gas configuration for Cobalt?

• [Kr] 4s² 3d⁷

• [Ar] 4s² 4d⁷

• 
  [Kr] 4s² 4d⁷

• [Ar] 4s² 3d⁷

The distance from the nucleus of an atom to the valence electrons is the __________

• 
  Atomic Radius

• Ionization Energy

• 
  Electronegativity

• Electrostatic

Ionization energy is the energy needed to _________ an electron.

• fission

• explode

• remove

• add

Which element has the highest electronegativity?

• K

• Li

• F

• Na

Which element has the highest ionization energy?

• Na

• Li

• Mg

• Ne

Group 18 elements are called ________________

• Noble gases

• halogen

• Transition metals

• alkali metals

When across the period, effective nuclear charge _________, When going down the group, effective nuclear charge __________.

• decreases, decreases

• decreases, increases

• increase, decrease

• increase, increase