Electron configurations of transition elements in Period 5:
Y Yttrium [Kr] 4d1 5s2
Zr Zirconium [Kr] 4d2 5s2
Nb Niobium [Kr] 4d4 5s1 (*)
Mo Molybdenum [Kr] 4d5 5s1 (*)
Tc Technetium [Kr] 4d5 5s2
Ru Ruthenium [Kr] 4d7 5s1 (*)
Rh Rhodium [Kr] 4d8 5s1 (*)
Pd Palladium [Kr] 4d10 (*)
Ag Silver [Kr] 4d10 5s1 (*)
Cd Cadmium [Kr] 4d10 5s2
What are transition elements?
- The transition elements or transition metals occupy the short columns in the center of the periodic table, between Group 2A and Group 3A.
- They are sometimes called the d-block elements, since in this region the d-orbitals are being filled in, and are also referred to as B-group elements since in most numbering systems of the columns on the periodic table the numerals of these groups are followed by the letter B.
What are period 5 transition elements?
The period 5 transition metals are yttrium (Y), zirconium (Zr), niobium (Nb), molybdenum (Mo), technetium (Tc), ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), and cadmium (Cd).
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