Chemistry Unit 4 Test Review - Practice Problems For Midterm

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom in its gaseous state.

Front

Which element has the smallest ionization energy: H, He, O, or F?

Back

He has the smallest ionization energy.

Front

How many valence electrons does Arsenic have?

Back

Arsenic has 5 valence electrons.

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

Which element has the smallest electronegativity: As, Se, Te, or Sb?

Back

Sb has the smallest electronegativity.

Front

Which element has the greatest ionization energy: Li, Rb, Cs, or Na?

Back

Li has the greatest ionization energy.

Front

Which element has the greatest electronegativity: O, C, Be, or N?

Back

O has the greatest electronegativity.

Front

What is the trend of ionization energy across a period in the periodic table?

Back

Ionization energy generally increases across a period from left to right.

Front

What is the trend of electronegativity down a group in the periodic table?

Back

Electronegativity generally decreases down a group.

Front

How do you determine the number of valence electrons in an element?

Back

The number of valence electrons can be determined by the group number of the element in the periodic table.