What Are d Block Elements in Chemistry?
D-block elements, also known as transition metals, are a group of elements that occupy the d-block in the periodic table. They reside in the central part of the table, spanning groups 3 to 12 and periods 4 to 7. These elements play a pivotal role in various chemical reactions due to their electron configurations and variable oxidation states. For example, the element Chromium (Cr) has an electron configuration of [Ar] 4s1 3d5, where the last electron enters the 3d subshell. This unique arrangement leads to the forming of various oxidation states, a defining characteristic of these elements.
D Block Elements Definition
d-block elements are the elements in which the last electron enters the d-subshell. The electron configuration of d-block elements typically follows the pattern [preceding period noble gas] ns1-2 (n–1) d1-10 with valence electrons residing in the penultimate d subshell.
d Block Elements
D-block elements are the elements in which the last electron enters the d subshell. d Block elements are situated at the middle of the periodic table, and act as a bridge between metal and non-metals in the periodic table. These elements, also known as transition elements, play a significant role in shaping our fundamental understanding of chemical principles.
In this article, we will learn about d-block elements in detail exploring their electron configurations, providing examples along with their properties and applications, and examining their historical context.
Table of Content
- What Are d Block Elements in Chemistry?
- D Block Elements on Periodic Table
- Why d Block Elements Are Called Transition Elements?
- Atomic Structure of d Block Elements
- Characteristics of d Block Elements
- Properties of d Block Elements