89 Ac 악티늄 227.0 u

악티늄

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주기
7
족
—
블록
f-블록
상 (표준 상태)
Solid

악티늄은 어둠 속에서 푸르게 빛나는 방사성 원소이다. 악티늄족의 첫 원소이며 방사선 치료 연구에 쓰인다.

악티늄 개요

Actinium opens the actinide series and lends the fourteen elements that follow it their collective name. It carries atomic number 89 and a relative atomic mass of 227.0, and its [Rn] 6d1 7s2 configuration places a single d electron above the radon core in period 7 of the f-block. The Pauling electronegativity is 1.1 and the element is a solid under standard conditions. Its radioactivity is intense enough that samples emit a blue glow in darkness, produced as the emitted radiation excites surrounding air. The same decay behaviour has made actinium a subject of medical research, where short-range alpha emission from the element is being investigated as a way of delivering radiation therapy to targeted tissue while sparing the material around it.

물리적 성질

원자 질량 227.0 u
표준 상태에서의 상 Solid

전자적 성질

전기 음성도 1.1

전자 배치

배치 [Rn] 6d¹ 7s²

전자껍질 배치

악티늄의 전자껍질 배치 Ac 2e⁻ 8e⁻ 18e⁻ 32e⁻ 18e⁻ 9e⁻ 2e⁻
악티늄의 전자껍질 구조 — 껍질별 전자 수.
껍질 전자
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 18
6 (P) 9
7 (Q) 2

주기율표에서의 위치

주기율표에서 악티늄의 위치 Ac

블록 & 주기

블록

s p d f

주기

1 2 3 4 5 6 7

주기율표

란타넘족 악티늄족

더 많은 악티늄족

90 Th 토륨 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 악티늄?
악티늄 (Ac) is a chemical element with atomic number 89. It is a solid at standard temperature and pressure, classified as a 악티늄족.
What are the key properties of 악티늄?
악티늄 has an atomic mass of 227.0 u.
What is the electron configuration of 악티늄?
The electron configuration of 악티늄 is [Rn] 6d1 7s2. It is in the f-block of the periodic table.
What is the electronegativity of 악티늄?
악티늄 has an electronegativity of 1.1 on the Pauling scale.