Question

Transition metals in periodic table upto 6th period

Answer 1

A period 6 element is one of the chemical elements in the sixth row (or period) of the periodic table of the elements, including the lanthanides. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behaviour of the elements as their atomic number increases: a new row is begun when chemical behaviour begins to repeat, meaning that elements with similar behaviour fall into the same vertical columns. The sixth period contains 32 elements, tied for the most with period 7, beginning with caesium and ending with radon. Lead is currently the last stable element; all subsequent elements are radioactive. For bismuth, however, its only primordial isotope,209Bi, has a half-life of more than 1019 years, over a billion times longer than the current age of the universe. As a rule, period 6 elements fill their 6s shells first, then their 4f, 5d, and 6p shells, in that order; however, there are exceptions, such as gold.
here the list of transition metals up to 6th period:
72HfHafniumTransition metal[Xe] 4f14 5d2 6s2
73TaTantalumTransition metal[Xe] 4f14 5d3 6s2
74WTungstenTransition metal[Xe] 4f14 5d4 6s2
75ReRheniumTransition metal[Xe] 4f14 5d5 6s2
76OsOsmiumTransition metal[Xe] 4f14 5d6 6s2
77IrIridiumTransition metal[Xe] 4f14 5d7 6s2
78PtPlatinumTransition metal[Xe] 4f14 5d9 6s1 [b]
79AuGoldTransition metal[Xe] 4f14 5d10 6s1 [b
]80HgMercuryPost-transition metal[Xe] 4f14 5d10 6s2
81TlThalliumPost-transition metal[Xe] 4f14 5d10 6s2 6p1
82PbLeadPost-transition metal[Xe] 4f14 5d10 6s2 6p2
83BiBismuthPost-transition metal[Xe] 4f14 5d10 6s2 6p3
84PoPoloniumPost-transition metal[Xe] 4f14 5d10 6s2 6p4