WORKSHEET ON D AND F BLOCK ELEMENTS

 

Here are 10 one-word answer-type questions from the chapter "The d- and f-Block Elements" for Class 12:

1. Which metal is used in making stainless steel?
   Chromium

2. What is the common oxidation state of transition elements?
   +2

3. Which element is the lightest transition metal?
   Scandium

4. What is the general electronic configuration of d-block elements?
   $(n-1)d^{1-10} ns^{0-2}$

5. Which element of the first transition series does not show variable oxidation states?
   Scandium

6. Which lanthanoid is used in the manufacture of strong magnets?
   Neodymium

7. Which is the only transition metal that exists as a liquid at room temperature?
   Mercury

8. What is the main ore of chromium?
   Chromite

9. Which transition element shows the highest oxidation state of +7?
   Manganese

10. Which series of elements is known as inner transition elements?
    f-block

These concise questions are helpful for quick revision of the key points in the chapter.