Electron Configuration and Mercury Properties

The video tutorial explains how to write the electron configuration for mercury (Hg) and its ion Hg2+. It starts by introducing the concept and the challenges of writing configurations for mercury. The tutorial then provides a step-by-step guide using the periodic table, detailing the electron configuration process. It also discusses an alternative way to write the configuration and explains how to form the Hg2+ ion by removing electrons. The video concludes with a summary of the key points.

What is the atomic number of mercury, and what does it signify?

• 81, which is the number of protons

• 80, which is the number of protons

• 82, which is the number of neutrons

• 78, which is the number of electrons

How many electrons does the 1s orbital hold in mercury's electron configuration?

• 6

• 4

• 2

• 1

Which orbital follows 4s in the electron configuration of mercury?

• 3p

• 4p

• 5s

• 3d

What is the maximum number of electrons that the d orbital can hold?

• 6

• 8

• 12

• 10

What is the significance of the superscripts in electron configurations?

• They indicate the number of orbitals

• They show the number of electrons in each orbital

• They denote the type of orbital

• They represent the energy level

Which orbital can hold up to 14 electrons?

• f

• s

• p

• d

Why might the 6s2 electrons be written after the 5d in some configurations?

• To simplify the configuration

• To indicate the electrons lost during ion formation

• To highlight the most stable configuration

• To show the order of filling

What happens to the 6s2 electrons when forming the mercury 2+ ion?

• They are gained

• They are lost

• They remain unchanged

• They are shared

How many electrons are lost when mercury forms a 2+ ion?

• 4

• 3

• 2

• 1

What is the electron configuration for the mercury 2+ ion?

• Same as mercury but without 5d10

• Same as mercury but without 3d10

• Same as mercury but without 6s2

• Same as mercury but without 4f14