56 Ba 바륨 137.33 u

바륨

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주기
6
2
블록
s-블록
상 (표준 상태)
Solid

바륨은 녹색 불꽃을 내는 무른 알칼리 토금속이다. 황산바륨은 의료용 X선 촬영에 쓰인다.

바륨 개요

Barium (Ba) is a soft, silvery alkaline earth metal, element 56, occupying group 2 of period 6 in the s-block. Its electron configuration is [Xe] 6s², its atomic mass 137.33, and its Pauling electronegativity 0.89. Heated in a flame, barium and its salts burn a characteristic green, a property exploited in fireworks. Its most familiar practical role is medical: because barium sulfate is dense and insoluble, patients ingest it as a contrast agent that renders the digestive tract visible under X-rays. Reactive toward air and water, the pure metal is solid at standard conditions and, like calcium above it, favors the +2 oxidation state.

물리적 성질

원자 질량 137.33 u
표준 상태에서의 상 Solid

전자적 성질

전기 음성도 0.89

전자 배치

배치 [Xe] 6s²

전자껍질 배치

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

주기율표에서의 위치

주기율표에서 바륨의 위치 Ba

바륨을(를) 포함하는 화합물

Frequently Asked Questions

What is 바륨?
바륨 (Ba) is a chemical element with atomic number 56. It is a solid at standard temperature and pressure, classified as a 알칼리 토금속.
What are the key properties of 바륨?
바륨 has an atomic mass of 137.33 u.
What is the electron configuration of 바륨?
The electron configuration of 바륨 is [Xe] 6s2. It is in the s-block of the periodic table.
What is the electronegativity of 바륨?
바륨 has an electronegativity of 0.89 on the Pauling scale.