61 Pm 프로메튬 145.0 u

프로메튬

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주기
6
족
—
블록
f-블록
상 (표준 상태)
Solid

프로메튬은 안정한 동위원소가 없는 유일한 방사성 란타넘족 원소이다. 야광 도료와 원자력 전지에 쓰인다.

프로메튬 개요

Alone among the lanthanides, promethium (Pm) has no stable isotopes and is intensely radioactive, making it exceedingly rare in nature. Element 61 sits in period 6 of the f-block, with an atomic mass near 145, the electron configuration [Xe] 4f⁵ 6s², and a Pauling electronegativity of 1.13. Its radioactivity is put to practical use: promethium has been incorporated into self-luminous paints and into compact nuclear batteries that supply long-lived power for specialized instruments. The element is a soft metal, solid at standard conditions, and adopts the +3 oxidation state of its neighbors.

물리적 성질

원자 질량 145.0 u
표준 상태에서의 상 Solid

전자적 성질

전기 음성도 1.13

전자 배치

배치 [Xe] 4f⁵ 6s²

전자껍질 배치

프로메튬의 전자껍질 배치 Pm 2e⁻ 8e⁻ 18e⁻ 23e⁻ 8e⁻ 2e⁻
프로메튬의 전자껍질 구조 — 껍질별 전자 수.
껍질 전자
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 23
5 (O) 8
6 (P) 2

주기율표에서의 위치

주기율표에서 프로메튬의 위치 Pm

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 62 Sm 사마륨 63 Eu 유로퓸 64 Gd 가돌리늄 65 Tb 터븀 66 Dy 디스프로슘 67 Ho 홀뮴

Frequently Asked Questions

What is 프로메튬?
프로메튬 (Pm) is a chemical element with atomic number 61. It is a solid at standard temperature and pressure, classified as a 란타넘족.
What are the key properties of 프로메튬?
프로메튬 has an atomic mass of 145.0 u.
What is the electron configuration of 프로메튬?
The electron configuration of 프로메튬 is [Xe] 4f5 6s2. It is in the f-block of the periodic table.
What is the electronegativity of 프로메튬?
프로메튬 has an electronegativity of 1.13 on the Pauling scale.