Question

topic5 d4 assessment periodic table
9 of 42

1. what makes the d block wider than either the s block or the p block?

○ the elements in the d block are all metals.
○ the elements in the d block are more important than the elements in the rest of the table.
○ the d block is the most researched area of the periodic table.
○ the d sub - orbital can hold ten electrons, making the d block ten elements wide.

Explanation:

Step1: Analyze each option

• Option 1: The fact that elements in the d - block are metals has no relation to the width of the block.
• Option 2: Importance of elements is a subjective concept and not related to the width of the block.
• Option 3: Research area has nothing to do with the width of the block.
• Option 4: In the periodic table, the width of a block is determined by the number of electrons that the corresponding sub - orbital can hold. The s - orbital can hold 2 electrons (so s - block is 2 elements wide), the p - orbital can hold 6 electrons (so p - block is 6 elements wide) and the d - orbital can hold 10 electrons (so d - block is 10 elements wide).

Answer:

The d sub - orbital can hold ten electrons, making the d block ten elements wide.