How many elements are in d block and which are they there special conditions

The d block, also known as the transition metals, is located in the middle of the periodic table. It consists of 10 elements, which are:

1. Scandium (Sc)
2. Titanium (Ti)
3. Vanadium (V)
4. Chromium (Cr)
5. Manganese (Mn)
6. Iron (Fe)
7. Cobalt (Co)
8. Nickel (Ni)
9. Copper (Cu)
10. Zinc (Zn)

These elements have special conditions due to their electron configurations. The d block elements have partially filled d orbitals, which allows them to exhibit unique properties such as variable oxidation states, high melting and boiling points, and the ability to form complex compounds. They also tend to be good conductors of heat and electricity. Additionally, the d block elements often show a transition in their properties across the period, with the first half of the period being more reactive and the second half being less reactive.