64 Gd 가돌리늄 157.25 u

가돌리늄

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주기
6
족
—
블록
f-블록
상 (표준 상태)
Solid

가돌리늄은 특이한 자기적 성질을 지녀 MRI 조영제로 쓰인다. 안정한 원소 가운데 중성자 흡수 단면적이 가장 크다.

가돌리늄 개요

Valued in medicine as an MRI contrast agent, gadolinium (Gd) enhances the clarity of magnetic-resonance images by altering the magnetic behavior of nearby tissue. Element 64 is a lanthanide in period 6 of the f-block, with an atomic mass of 157.25, the electron configuration [Xe] 4f⁷ 5d¹ 6s², and a Pauling electronegativity of 1.2. It possesses the highest thermal-neutron absorption cross-section of any stable element, which makes it useful in nuclear-reactor shielding and control. Gadolinium also displays notable magnetic properties near room temperature. The silvery metal is solid at standard conditions.

물리적 성질

원자 질량 157.25 u
표준 상태에서의 상 Solid

전자적 성질

전기 음성도 1.2

전자 배치

배치 [Xe] 4f⁷ 5d¹ 6s²

전자껍질 배치

가돌리늄의 전자껍질 배치 Gd 2e⁻ 8e⁻ 18e⁻ 25e⁻ 9e⁻ 2e⁻
가돌리늄의 전자껍질 구조 — 껍질별 전자 수.
껍질 전자
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 25
5 (O) 9
6 (P) 2

주기율표에서의 위치

주기율표에서 가돌리늄의 위치 Gd

블록 & 주기

블록

s p d f

주기

1 2 3 4 5 6 7

주기율표

란타넘족 악티늄족

더 많은 란타넘족

57 La 란타넘 58 Ce 세륨 59 Pr 프라세오디뮴 60 Nd 네오디뮴 61 Pm 프로메튬 62 Sm 사마륨 63 Eu 유로퓸 65 Tb 터븀 66 Dy 디스프로슘 67 Ho 홀뮴

Frequently Asked Questions

What is 가돌리늄?
가돌리늄 (Gd) is a chemical element with atomic number 64. It is a solid at standard temperature and pressure, classified as a 란타넘족.
What are the key properties of 가돌리늄?
가돌리늄 has an atomic mass of 157.25 u.
What is the electron configuration of 가돌리늄?
The electron configuration of 가돌리늄 is [Xe] 4f7 5d1 6s2. It is in the f-block of the periodic table.
What is the electronegativity of 가돌리늄?
가돌리늄 has an electronegativity of 1.2 on the Pauling scale.