Periode 5Periode 6Periode 7

UnsurZKonfigurasi elektronUnsurZKonfigurasi elektronUnsurZKonfigurasi elektron

Itrium39[Kr] 5s24d1Lantanum57[Xe] 6s25d1Aktinium89[Rn] 7s26d1

Serium58[Xe] 6s24f15d1Torium90[Rn] 7s26d2

Praseodimium59[Xe] 6s24f3Protaktinium91[Rn] 7s25f26d1

Neodimium60[Xe] 6s24f4Uranium92[Rn] 7s25f36d1

Prometium61[Xe] 6s24f5Neptunium93[Rn] 7s25f46d1

Samarium62[Xe] 6s24f6Plutonium94[Rn] 7s25f6

Europium63[Xe] 6s24f7Amerisium95[Rn] 7s25f7

Gadolinium64[Xe] 6s24f75d1Kurium96[Rn] 7s25f76d1

Terbium65[Xe] 6s24f9Berkelium97[Rn] 7s25f9

Zirkonium40[Kr] 5s24d2Hafnium72[Xe] 6s24f145d2

Niobium41[Kr]5s14d4Tantalum73[Xe] 6s24f145d3

Molibdenum42[Kr]5s14d5Tungsten74[Xe] 6s24f145d4

Teknesium43[Kr] 5s24d5Renium75[Xe] 6s24f145d5

Rutenium44[Kr]5s14d7Osmium76[Xe] 6s24f145d6

Rodium45[Kr]5s14d8Iridium77[Xe] 6s24f145d7

Paladium46[Kr]4d10Platinum78[Xe]6s14f145d9

Perak47[Kr]5s14d10Emas79[Xe]6s14f145d10

Kadmium48[Kr] 5s24d10Raksa80[Xe] 6s24f145d10

Indium49[Kr] 5s24d105p1Talium81[Xe] 6s24f145d106p1

1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s 5f 6d 7p1s22s22p63s23p3.