100 Fm 페르뮴 257.0 u

페르뮴

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주기
7
족
—
블록
f-블록
상 (표준 상태)
Solid

페르뮴은 엔리코 페르미의 이름을 딴 인공 원소이다. 역시 수소폭탄 낙진 잔해에서 처음 확인되었다.

페르뮴 개요

Like einsteinium beside it, fermium was first identified in debris from a hydrogen bomb test, the element having been assembled inside the explosion by rapid successive neutron capture. It honours Enrico Fermi and holds atomic number 100 with a relative atomic mass of 257.0. The configuration [Rn] 5f12 7s2 places it late in the actinide series of period 7, and its Pauling electronegativity is given as 1.3. Under standard conditions it is a solid. Fermium marks a practical boundary in actinide production: it is the heaviest element that can be made in weighable amounts by neutron irradiation in a reactor, and everything past it requires bombardment with charged particles in an accelerator instead.

물리적 성질

원자 질량 257.0 u
표준 상태에서의 상 Solid

전자적 성질

전기 음성도 1.3

전자 배치

배치 [Rn] 5f¹² 7s²

전자껍질 배치

페르뮴의 전자껍질 배치 Fm 2e⁻ 8e⁻ 18e⁻ 32e⁻ 30e⁻ 8e⁻ 2e⁻
페르뮴의 전자껍질 구조 — 껍질별 전자 수.
껍질 전자
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 30
6 (P) 8
7 (Q) 2

주기율표에서의 위치

주기율표에서 페르뮴의 위치 Fm

블록 & 주기

블록

s p d f

주기

1 2 3 4 5 6 7

주기율표

란타넘족 악티늄족

더 많은 악티늄족

89 Ac 악티늄 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

Frequently Asked Questions

What is 페르뮴?
페르뮴 (Fm) is a chemical element with atomic number 100. It is a solid at standard temperature and pressure, classified as a 악티늄족.
What are the key properties of 페르뮴?
페르뮴 has an atomic mass of 257.0 u.
What is the electron configuration of 페르뮴?
The electron configuration of 페르뮴 is [Rn] 5f12 7s2. It is in the f-block of the periodic table.
What is the electronegativity of 페르뮴?
페르뮴 has an electronegativity of 1.3 on the Pauling scale.