Electron Configuration and Ion Charges

This video tutorial explains how to write the electron configuration for zirconium (Zr). It begins by identifying zirconium's atomic number and the number of electrons. Two methods for determining electron configuration are discussed: the diagonal rule and using the periodic table blocks. The video provides a detailed step-by-step configuration for zirconium, followed by a condensed notation using krypton as the noble gas. Finally, the video explains the electron configuration for the Zr4+ ion, highlighting the loss of valence electrons to achieve a noble gas configuration.

What is the atomic number of zirconium, and how does it relate to its electron count?

• Atomic number is 80, which equals 80 electrons.

• Atomic number is 60, which equals 60 electrons.

• Atomic number is 40, which equals 40 electrons.

• Atomic number is 20, which equals 20 electrons.

Which rule can be used to determine the electron configuration of an element?

• The vertical rule

• The diagonal rule

• The horizontal rule

• The circular rule

What are the blocks in the periodic table used for determining electron configuration?

• A block, B block, C block, D block

• S block, D block, P block, F block

• M block, N block, O block, P block

• X block, Y block, Z block, W block

How many electrons can the 'd' orbital hold?

• 2 electrons

• 4 electrons

• 10 electrons

• 6 electrons

What is the electron configuration ending for zirconium?

• 2p6

• 5s2

• 3d10

• 4d2

Which noble gas is used for the condensed electron configuration of zirconium?

• Neon

• Xenon

• Krypton

• Argon

What does the '4+' in Zr4+ indicate?

• Loss of 4 protons

• Gain of 4 protons

• Loss of 4 electrons

• Gain of 4 electrons

What happens to the electron configuration of Zr4+ compared to neutral zirconium?

• It gains 4 electrons.

• It loses 4 electrons.

• It gains 4 protons.

• It loses 4 protons.

What is the significance of a positive charge in an ion like Zr4+?

• It indicates a loss of protons.

• It indicates a gain of protons.

• It indicates a loss of electrons.

• It indicates a gain of electrons.

What is the noble gas configuration for Zr4+?

• Same as Argon

• Same as Xenon

• Same as Krypton

• Same as Neon