90 Th 토륨 232.04 u

토륨

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주기
7
족
—
블록
f-블록
상 (표준 상태)
Solid

토륨은 원자력 연료로 연구되는 약한 방사성 악티늄족 원소이다. 지각에서 우라늄보다 풍부하다.

토륨 개요

Abundance sets thorium apart from the other heavy actinides: the crust contains more of it than of uranium, and its weak radioactivity makes it comparatively tractable to handle. The element holds atomic number 90 and a relative atomic mass of 232.04, with the configuration [Rn] 6d2 7s2 and an electronegativity of 1.3. It is a solid at standard temperature and pressure and belongs to the f-block of period 7. Its abundance and nuclear behaviour together explain sustained research interest in thorium as a reactor fuel, an application investigated as an alternative to the uranium fuel cycle that currently dominates civil nuclear power. Unlike most members of the series, thorium is recovered from ordinary mineral processing rather than produced in a reactor.

물리적 성질

원자 질량 232.04 u
표준 상태에서의 상 Solid

전자적 성질

전기 음성도 1.3

전자 배치

배치 [Rn] 6d² 7s²

전자껍질 배치

토륨의 전자껍질 배치 Th 2e⁻ 8e⁻ 18e⁻ 32e⁻ 18e⁻ 10e⁻ 2e⁻
토륨의 전자껍질 구조 — 껍질별 전자 수.
껍질 전자
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 18
6 (P) 10
7 (Q) 2

주기율표에서의 위치

주기율표에서 토륨의 위치 Th

블록 & 주기

블록

s p d f

주기

1 2 3 4 5 6 7

주기율표

란타넘족 악티늄족

Th가 포함된 반응

토륨-232의 알파 붕괴

²³²Th → ²²⁸Ra + ⁴He

핵

우라늄-238의 알파 붕괴

²³⁸U → ²³⁴Th + ⁴He

핵

더 많은 악티늄족

89 Ac 악티늄 91 Pa 프로트악티늄 92 U 우라늄 93 Np 넵투늄 94 Pu 플루토늄 95 Am 아메리슘 96 Cm 퀴륨 97 Bk 버클륨 98 Cf 캘리포늄 99 Es 아인슈타이늄

Frequently Asked Questions

What is 토륨?
토륨 (Th) is a chemical element with atomic number 90. It is a solid at standard temperature and pressure, classified as a 악티늄족.
What are the key properties of 토륨?
토륨 has an atomic mass of 232.04 u.
What is the electron configuration of 토륨?
The electron configuration of 토륨 is [Rn] 6d2 7s2. It is in the f-block of the periodic table.
What is the electronegativity of 토륨?
토륨 has an electronegativity of 1.3 on the Pauling scale.