Question

d-block elements are also called as__________?

Answer 1

Transition elements:

• Transition elements are referred to as those elements that have partially filled d-subshells.
• According to the IUPAC rule, a transition metal is known as an element that has either at least one partially filled d-orbital atom or can produce cations that have partially filled d-subshells.
• Generally, the transition elements are referred to as the d-block elements, where the elements belong to the middle part of the periodic table consisting of groups $3\mathrm{to}12$ which exist in between the s and p-block elements in the periodic table.

d-block elements as transition elements:

• The d-block elements are basically called transition elements as they exhibit transitional behavior between s-block and p-block elements.
• Their properties are said to be transitional between the highly reactive metallic elements of s-block that are ionic in nature and the elements of p-block that are mostly covalent in nature.
• Hence, the d-block elements help in constructing a bridge between the s and p-block elements.
• The d-block elements are known to have a general electronic configuration of $(\mathrm{n}-1){\mathrm{d}}^{1-10}{\mathrm{ns}}^{1-2}.$

Hence, d-block elements are also called as transition elements.