第一鉄






酸化第一鉄(英: ferrous oxide)は厳密には酸化鉄(II)と呼ばれる。


第一鉄（だいいちてつ、ferrous、Fe2+）とは、二価鉄化合物（酸化数+2）を指す化学用語で、対するものに三価鉄化合物（酸化数+3）を指す第二鉄（ferric、Fe3+）がある[1]。




水溶液中の鉄のプールベダイアグラム


化学以外では、ferrousは鉄の存在を表す形容詞として用いられる[1]。この用語は鉄を意味するラテン語のferrumが由来である[2]。



出典



  1. ^ ab Ferrous, Merriam-Webster, http://www.merriam-webster.com/dictionary/ferrous 2008年4月19日閲覧。 .


  2. ^ Etymology (Meaning of Words), (30 November 2007), http://en.allexperts.com/q/Etymology-Meaning-Words-1474/Origin-word-1.htm 2008年4月19日閲覧。 .



関連項目




  • 非鉄金属（non-ferrous metal）

  • 第二鉄

  • 強磁性

  • 製鋼

  • 酸化鉄(II)

  • 塩化鉄(II)

  • 臭化鉄(II)




Popular posts from this blog

android studio warns about leanback feature tag usage required on manifest while using Unity exported app?

Image
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box; } 0 This is a simple project showing cubes on Unity, exported to android project and imported on Android studio. On maifest file it showed following warning: Expecting <uses-feature android:name="android.software.leanback" android:required="false" /> tag I have no information about it. And also on default emptyview android project does not use/mention this feature. I know it is required by TV's and such but why its not added by default? Why is this? And Should I concern about it? android unity3d
Read more

SQL update select statement

Image
0 I'm trying to update an entry in my database (postgresql). I'm having a problem with updating the query: INSERT INTO prices (price, product_id) SELECT product_price, commn_id FROM products_temp as prod WHERE NOT EXISTS (SELECT * FROM prices od WHERE prod.commn_id = od.product_id) OR prod.product_price != ( SELECT price FROM prices as p WHERE p.product_id = prod.commn_id order by p.end desc LIMIT 1 ) Query works fine when i delete: OR prod.product_price != ( SELECT price FROM prices as p WHERE p.product_id = prod.commn_id order by p.end desc LIMIT 1 ) So it seems to me that it's looping through this operation. My question is, how can I fix it? sql postgresql
Read more

'app-layout' is not a known element: how to share Component with different Modules

Image
0 My application was working fine until I decided to go with lazy loading: So, my shared component looks like this: import { Component, Renderer2 } from '@angular/core'; export interface FormModel { captcha?: string; } @Component({ selector: 'app-layout', templateUrl: './app-layout.component.html', styleUrls: ['./app-layout.css'] }) export class FullLayoutComponent { } app-layout.component.ts I am using this component in my Another component say school-home.component.html like this: <app-layout> </app-layout> and it was working fine until I created a Module school-home.module.ts like this: import { NgModule } from '@angular/core'; import { CommonModule } from '@angular/common'; import { SchoolhomeRoutingModule
Read more