원소 주기율표란 무엇입니까? (대화형 3D 주기율표)
대화형 3D WebGL 궤도 모델, 실시간 온도 상태 시뮬레이션, 동위원소 붕괴 데이터 및 IUPAC 화학적 특성을 통해 전체 원소 주기율표를 탐색하세요.
주기율표 그룹 및 원소 분류
The modern periodic table organizes 118 known chemical elements in order of increasing atomic number (Z), structured into 7 periods, 18 groups, and 4 electron subshell blocks (s, p, d, f):
1. Alkali & Alkaline Earth Metals (Groups 1 & 2)
특징적인 +1 및 +2 산화 상태(리튬, 나트륨, 칼륨, 마그네슘, 칼슘)를 갖는 반응성이 높은 s-블록 금속.
2. Transition Metals (Groups 3-12)
다중 산화 상태, 높은 전기 전도성 및 다채로운 배위 착물(철, 구리, 금, 은)을 특징으로 하는 d-블록 요소입니다.
3. Post-Transition Metals & Metalloids
현대 전자 제품에 전력을 공급하는 금속 및 비금속 특성(실리콘, 게르마늄, 비소)을 연결하는 반도체 요소입니다.
4. 반응성 비금속 및 할로겐(17족)
Electronegative p-block elements (Fluorine, Chlorine, Bromine, Iodine) readily accepting electrons to achieve stable octet shells.
5. Noble Gases (Group 18)
표준 조건(헬륨, 네온, 아르곤)에서 매우 낮은 화학 반응성을 나타내는 완전히 포화된 원자가 껍질(ns2np6)을 가진 불활성 가스.
6. Lanthanides & Actinides (f-Block Elements)
Rare-earth metals and heavy radioactive actinoids at the bottom of the table (Uranium, Plutonium, Holmium).
Periodic Table Trends, Charges & Atomic Mass
Atomic Radius & Electronegativity Trends
Across a period from left to right, atomic radii decrease while electronegativity and ionization energy increase. Down a group, atomic radius expands.
Periodic Table with Charges (Oxidation States)
Predict common ionic charges and oxidation numbers based on group position, electron configuration, and valence shell electrons.
Periodic Table with Atomic Mass
Standard atomic weights measured in unified atomic mass units (u / Da), calculated as the weighted average of natural isotopes.
118 Chemical Elements Directory (Full Periodic Table List)
View complete element catalog →Frequently Asked Questions About the Periodic Table (FAQ)
How many elements are on the periodic table?
There are currently 118 confirmed chemical elements on the periodic table recognized by IUPAC, beginning with Hydrogen (Z=1) and ending with Oganesson (Z=118).
What is 67 on the periodic table?
Element 67 on the periodic table is Holmium (symbol: Ho, atomic mass: 164.93 u). Holmium is a rare-earth metal belonging to the lanthanide series.
What is the difference between a period and a group on the periodic table?
A period is a horizontal row on the periodic table containing elements with the same number of electron shells. A group is a vertical column containing elements with identical valence electron counts and similar chemical behavior.