79 Au 금 196.97 u

금 개요

Gold (Au) has been treasured across human cultures for its enduring luster and resistance to corrosion. Element 79 lies in group 11 of period 6 in the d-block, with an atomic mass of 196.97, the electron configuration [Xe] 4f¹⁴ 5d¹⁰ 6s¹, and the highest electronegativity in its group at 2.54. Chemically inert, gold neither tarnishes nor rusts, which preserves its brilliance indefinitely and underlies its historic role as a monetary standard. Beyond coinage and jewelry, its excellent conductivity and reliability make it essential in electronic connectors and microcircuitry. A soft, dense, yellow metal, gold is solid at standard conditions.

물리적 성질

원자 질량 196.97 u
표준 상태에서의 상 Solid

전자적 성질

전기 음성도 2.54

전자 배치

배치 [Xe] 4f¹⁴ 5d¹⁰ 6s¹

전자껍질 배치

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

주기율표에서의 위치

주기율표에서 금의 위치 Au

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Frequently Asked Questions

What is 금?
금 (Au) is a chemical element with atomic number 79. It is a solid at standard temperature and pressure, classified as a 전이 금속.
What are the key properties of 금?
금 has an atomic mass of 196.97 u.
What is the electron configuration of 금?
The electron configuration of 금 is [Xe] 4f14 5d10 6s1. It is in the d-block of the periodic table.
What is the electronegativity of 금?
금 has an electronegativity of 2.54 on the Pauling scale.