Valence Electrons and Manganese Properties

The video tutorial explains how to draw the Lewis Dot Structure for manganese (Mn). It begins by discussing the periodic table trends and the challenges posed by transition metals like manganese. The video then delves into the electron configuration of manganese, highlighting the noble gas core and valence electrons. It provides a step-by-step guide to drawing the Lewis Dot Structure for manganese, noting the placement of valence electrons. Finally, it discusses the limited utility of the structure due to manganese's ability to lose different numbers of valence electrons when forming chemical bonds.

What is the main trend in valence electrons for main group elements in the periodic table?

• Group 13 through 18 have 3 to 8 valence electrons.

• Group 2 has three valence electrons.

• Transition metals have a fixed number of valence electrons.

• Group 1 has two valence electrons.

How many protons does manganese have?

• 18

• 25

• 30

• 35

Which noble gas is used as the core for the electron configuration of manganese?

• Neon

• Krypton

• Argon

• Xenon

How many valence electrons does manganese have?

• 5

• 6

• 7

• 8

What is a limitation of the Lewis Dot Structure for transition metals like manganese?

• It shows a fixed number of valence electrons.

• It cannot represent any valence electrons.

• It does not account for variable valence electron loss.

• It is only applicable to non-metals.