37 Rb 루비듐 85.468 u

루비듐

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주기
5
족
1
블록
s-블록
상 (표준 상태)
Solid

루비듐은 공기 중에서 자연 발화하는 무르고 은백색인 알칼리 금속이다. 원자시계와 특수 유리에 쓰인다.

루비듐 개요

Soft, silvery-white, and reactive enough to ignite spontaneously in air, rubidium is an alkali metal of atomic number 37 and atomic mass 85.468. Its single valence electron ([Kr] 5s1) is loosely bound, giving the low electronegativity of 0.82 characteristic of its group. The element is a solid under standard conditions and sits in group 1, period 5, below potassium. As a heavier member of the alkali metals, rubidium holds its outer electron more weakly and is correspondingly more reactive than the lighter members, and it is never found in the free state. Its specialized uses include atomic clocks and the manufacture of certain specialty glasses, applications that draw on its well-defined atomic transitions and ready ionization.

물리적 성질

원자 질량 85.468 u
표준 상태에서의 상 Solid

전자적 성질

전기 음성도 0.82

전자 배치

배치 [Kr] 5s¹

전자껍질 배치

루비듐의 전자껍질 배치 Rb 2e⁻ 8e⁻ 18e⁻ 8e⁻ 1e⁻
루비듐의 전자껍질 구조 — 껍질별 전자 수.
껍질 전자
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 8
5 (O) 1

주기율표에서의 위치

주기율표에서 루비듐의 위치 Rb

블록 & 주기

블록

s p d f

주기

1 2 3 4 5 6 7

주기율표

란타넘족 악티늄족

더 많은 알칼리 금속

3 Li 리튬 11 Na 나트륨 19 K 칼륨 55 Cs 세슘 87 Fr 프랑슘

Frequently Asked Questions

What is 루비듐?
루비듐 (Rb) is a chemical element with atomic number 37. It is a solid at standard temperature and pressure, classified as a 알칼리 금속.
What are the key properties of 루비듐?
루비듐 has an atomic mass of 85.468 u.
What is the electron configuration of 루비듐?
The electron configuration of 루비듐 is [Kr] 5s1. It is in the s-block of the periodic table.
What is the electronegativity of 루비듐?
루비듐 has an electronegativity of 0.82 on the Pauling scale.