Question

An element with atomic number 30 is a
(A) Representative element
(B) Transition element
(C) d - block element
(D) S - block element​

Answer 1

Answer:Transition metal, any of various chemical elements that have valence electrons—i.e., electrons that can participate in the formation of chemical bonds—in two shells instead of only one. While the term transition has no particular chemical significance, it is a convenient name by which to distinguish the similarity of the atomic structures and resulting properties of the elements so designated. They occupy the middle portions of the long periods of the periodic table of elements between the groups on the left-hand side and the groups on the right. Specifically, they form Groups 3 (IIIb) through 12 (IIb)

Answer 2

Answer:

d block element

Explanation:

having electronic configuration[Ar] 3d10 4s2