快速查询元素周期表，获取元素详细属性和化学公式
You can filter by Chinese name, English name, element symbol, or atomic number.
Periodic Table
118 matched elementsAtomic Mass
1.008
Phase
Gas
Period / Group
Period 1 · Group 1
Block
s
Electron Configuration
1s1Quick Facts
Matched Elements
118 matched elements
Online DIG Lookup
Professional tool to query domain DNS records. Supports A, AAAA, MX, NS, and custom DNS servers.
Chart of Accounts Lookup
Look up standard account codes, names, and usage under enterprise accounting standards. Covers six major categories like assets and liabilities for quick retrieval by finance professionals and students.
WHOIS Domain Lookup
Look up domain WHOIS registration information via command line to retrieve key data like the owner, registrar, and expiration date.
A Series Paper Size Lookup
Find exact standard dimensions for A0 to A13 paper sizes, featuring millimeter and inch conversions alongside visual proportion charts.
Online DIG Lookup
Professional tool to query domain DNS records. Supports A, AAAA, MX, NS, and custom DNS servers.
Chart of Accounts Lookup
Look up standard account codes, names, and usage under enterprise accounting standards. Covers six major categories like assets and liabilities for quick retrieval by finance professionals and students.
WHOIS Domain Lookup
Look up domain WHOIS registration information via command line to retrieve key data like the owner, registrar, and expiration date.
A Series Paper Size Lookup
Find exact standard dimensions for A0 to A13 paper sizes, featuring millimeter and inch conversions alongside visual proportion charts.
Online NSLookup Tool
Check domain DNS records online. Instantly look up A, AAAA, CNAME, MX, and NS records with support for custom DNS servers.
化学学习或研究中需要快速查找元素信息？本工具提供完整的元素周期表查询功能，支持通过元素名称、符号、原子序数或原子量快速检索，输出包括原子半径、电负性、电子构型等详细属性，并附带常见化学公式参考。
输入时请使用标准元素符号（首字母大写）；原子量查询可能匹配多个同位素；结果中的放射性元素半衰期数据仅供参考。
对于过渡金属元素，建议同时查询其常见氧化态；有机化学研究中可重点关注碳、氢、氧、氮等元素的电负性和键能数据；材料科学应用时可重点参考密度、熔沸点等物理参数。