OL Midterm Review 2024 Fall

Front

What is the electron configuration of Sulfur?

Back

1s² 2s² 2p⁶ 3s² 3p⁴

Front

How many valence electrons does Sulfur have?

Back

6

Front

Which element is a metal: Ca, Cl, N, or Br?

Back

Ca

Front

Which of the following is a transition metal: iron, calcium, barium, or strontium?

Back

iron

Front

What was Mendeleev's contribution to modern chemistry?

Back

the periodic table

Front

What is the atomic number of Sulfur?

Back

16

Front

Define a transition metal.

Back

Elements that have partially filled d orbitals and can form variable oxidation states.

Front

What is the significance of valence electrons?

Back

They determine an element's chemical properties and reactivity.

Front

What is the periodic table?

Back

A tabular arrangement of elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What are noble gases?

Back

Elements in group 18 of the periodic table that are inert and have full valence shells.