43 Tc 테크네튬 97.0 u

테크네튬

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주기
5
족
7
블록
d-블록
상 (표준 상태)
Solid

테크네튬은 최초로 인공 생성된 원소이다. 동위원소 Tc-99m은 의료 진단 영상에 널리 쓰인다.

테크네튬 개요

Technetium (Tc) holds a singular place in chemistry as the first element to be produced artificially, its name deriving from the Greek word for artificial. Element 43 sits in group 7 of period 5 in the d-block, with an atomic mass of 97 and the electron configuration [Kr] 4d⁵ 5s². Every isotope of technetium is radioactive, and the element has no stable form. Its most widely used isotope, technetium-99m, is a workhorse of nuclear medicine, employed in millions of diagnostic imaging procedures each year to visualize organs and detect disease. With a Pauling electronegativity of 1.9, technetium behaves as a typical transition metal, forming compounds across several oxidation states despite its scarcity in nature.

물리적 성질

원자 질량 97.0 u
표준 상태에서의 상 Solid

전자적 성질

전기 음성도 1.9

전자 배치

배치 [Kr] 4d⁵ 5s²

전자껍질 배치

테크네튬의 전자껍질 배치 Tc 2e⁻ 8e⁻ 18e⁻ 13e⁻ 2e⁻
테크네튬의 전자껍질 구조 — 껍질별 전자 수.
껍질 전자
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 13
5 (O) 2

주기율표에서의 위치

주기율표에서 테크네튬의 위치 Tc

블록 & 주기

블록

s p d f

주기

1 2 3 4 5 6 7

주기율표

란타넘족 악티늄족

Tc가 포함된 반응

테크네튬-99m의 감마 붕괴

⁹⁹ᵐTc → ⁹⁹Tc + γ

핵

더 많은 전이 금속

21 Sc 스칸듐 22 Ti 타이타늄 23 V 바나듐 24 Cr 크로뮴 25 Mn 망가니즈 26 Fe 철 27 Co 코발트 28 Ni 니켈 29 Cu 구리 30 Zn 아연

Frequently Asked Questions

What is 테크네튬?
테크네튬 (Tc) is a chemical element with atomic number 43. It is a solid at standard temperature and pressure, classified as a 전이 금속.
What are the key properties of 테크네튬?
테크네튬 has an atomic mass of 97.0 u.
What is the electron configuration of 테크네튬?
The electron configuration of 테크네튬 is [Kr] 4d5 5s2. It is in the d-block of the periodic table.
What is the electronegativity of 테크네튬?
테크네튬 has an electronegativity of 1.9 on the Pauling scale.