Transition Elements and Their Properties

The video tutorial explains the electron configuration of transition elements, focusing on the example of vanadium. It discusses how to identify transition elements by their unfilled or partially filled d orbitals and verifies this by counting electrons to match the atomic number of vanadium. The tutorial also covers the filling of orbitals in transition elements, using Scandium as an example, and clarifies that while certain orbitals are filled, this is not the defining characteristic of transition elements. The main criterion is the presence of unfilled d orbitals, placing them in the d block of the periodic table.

What is a key feature of a transition element's electron configuration?

• Completely filled s orbitals

• Partially filled d orbitals

• Empty p orbitals

• Full outer shell

How many electrons are present in the element with the configuration 1s2 2s2 2p6 3s2 3p6 3d3 4s2?

• 18

• 21

• 23

• 25

Which element is identified by the electron configuration 1s2 2s2 2p6 3s2 3p6 3d3 4s2?

• Titanium

• Scandium

• Vanadium

• Chromium

What is true about the 1s, 2s, 2p, 3s, and 3p orbitals in transition elements?

• They are partially filled

• They are completely filled

• They are empty

• They are half-filled

Which of the following is the first transition element?

• Titanium

• Vanadium

• Scandium

• Chromium

Why is the statement 'all transition elements have filled 1s, 2s, 2p, 3s, and 3p orbitals' not a correct explanation for being a transition element?

• Because it only applies to non-metals

• Because it is incorrect

• Because it is not unique to transition elements

• Because it applies to all elements

What is the main reason an element is classified as a transition element?

• Being in the s block

• Being in the p block

• Having a full outer shell

• Having partially filled d orbitals

Which group or period elements also have filled 1s, 2s, 2p, 3s, and 3p orbitals?

• Period 4

• Group 2

• Group 1

• Period 5

What is the significance of the d block in the periodic table?

• It contains noble gases

• It contains transition elements

• It contains non-metals

• It contains alkali metals

Which of the following is not a characteristic of transition elements?

• Variable oxidation states

• Partially filled d orbitals

• High melting points

• Low density