71 Lu Lutetium 174,97 u

Lutetium

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Chu kỳ
6
Nhóm
—
Khối
d-khối
Pha (STP)
Solid

Lutetium is the last element in the lanthanide series. It is used in PET scan detectors, petroleum refining, and as a catalyst.

About Lutetium

The final element of the lanthanide series, lutetium (Lu) completes the f-block before the periodic table returns to the transition metals. Element 71 has an atomic mass of 174.97, the electron configuration [Xe] 4f¹⁴ 5d¹ 6s², and the highest electronegativity of the series at 1.27. Hard and dense compared with its lighter relatives, lutetium is used in the scintillator crystals of PET scanners and as a catalyst in petroleum cracking and other industrial reactions. It is one of the rarest and costliest of the rare earths to isolate. The silvery metal is solid at standard conditions.

Tính chất vật lý

Khối lượng nguyên tử 174.97 u
Pha ở STP Solid

Tính chất điện tử

Độ âm điện 1.27

Cấu hình electron

Cấu hình [Xe] 4f¹⁴ 5d¹ 6s²

Electron Shell Configuration

Lutetium electron shell configuration Lu 2e⁻ 8e⁻ 18e⁻ 32e⁻ 9e⁻ 2e⁻
Electron shell structure of Lutetium — electrons per shell.
Shell Electrons
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 9
6 (P) 2

Position in Periodic Table

Lutetium position in the periodic table Lu

Khối & Chu kỳ

Khối

s p d f

Chu kỳ

1 2 3 4 5 6 7

Bảng tuần hoàn

Lanthanide Actinide

Thêm Lanthanide

57 La Lanthanum 58 Ce Cerium 59 Pr Praseodymium 60 Nd Neodymium 61 Pm Promethium 62 Sm Samarium 63 Eu Europium 64 Gd Gadolinium 65 Tb Terbium 66 Dy Dysprosium

Frequently Asked Questions

What is Lutetium?
Lutetium (Lu) is a chemical element with atomic number 71. It is a solid at standard temperature and pressure, classified as a lanthanide.
What are the key properties of Lutetium?
Lutetium has an atomic mass of 174.97 u.
What is the electron configuration of Lutetium?
The electron configuration of Lutetium is [Xe] 4f14 5d1 6s2. It is in the d-block of the periodic table.
What is the electronegativity of Lutetium?
Lutetium has an electronegativity of 1.27 on the Pauling scale.