Question

Which is the only d-block man made element?

Answer 1

There is a large block of elements in the middle of the periodic table - these are the d-block elements. Also known as transition metals, d-block elements are arranged from groups 3-12 and defined by their d-electron configuration, which we'll discuss later on in the lesson.

D-Block Elements

Electron Configuration

Compared to their counterparts elsewhere on the periodic table, d-block elements have some very different chemistry. The primary characteristic that separates these metals from others is the composition of their d-electron, which is responsible for some very interesting bonding and reactivity

Answer 2

The only D-BLOCK man made element is
TECHNETIUM (Tc)
It's Group is 7
It's Atomic no. is 43
It's Mass is 98
HOPE IT'S HELPFUL