ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

A-Level Chemistry - Valency Table

Updated on January 7, 2013

Below is a table of positive and negative ions that you must know for any A-Level Chemistry exam!
Check out these hubs for more help with AS Chemistry revision:

An ion is an atom or molecule with a net electric charge due it losing or gaining one or more electrons.

The loss of electrons is called oxidation and makes the atom/molecule more positive.

The gain of electrons is called reduction and makes the atom/molecule more negative.

If an atom/molecule loses 1 electron it will have a +1 charge, if it loses 2 electrons it will have a +2 charge etc.

This is the same with gaining electrons. If an atom/molecule gains 1 electron it will have a -1 charge and if it gains 2 it will have a -2 charge - it's easy!

Negative Ions (Anions)

Name of ion
Formula
Charge
Chloride
Cl
-1
Bromide
Br
-1
Iodide
I
-1
Hydroxide
OH-
-1
Hydrogencarbonate
HCO3
-1
Hydrogensulphate
HSO4
-1
Nitrate
NO3
-1
Manganate
MnO4
-1
Oxygen
O
-2
Sulphate
SO4
-2
Sulphite
SO3
-2
Carbonate
CO3
-2
Sulphide
S
-2
Dichromate
Cr2O7
-2
Phosphate
PO4
-3

Positive Ions (Cations)

Name of Ion
Formula
Charge
Copper (I)
Cu
+1
Silver
Ag
+1
Sodium
Na
+1
Potassium
K
+1
Ammonium
NH4
+1
Hydrogen
H
+1
Lead (II)
Pb
+2
Tin (II)
Sn
+2
Magnesium
Mg
+2
Calcium
Ca
+2
Copper (II)
Cu
+2
Iron (II)
Fe
+2
Zinc
Zn
+2
Aluminium
Al
+3
Iron (III)
Fe
+3
Lead (IV)
Pb
+4
Tin (IV)
Sn
+4

Comments

    0 of 8192 characters used
    Post Comment

    • Anthropophobia profile imageAUTHOR

      Anthropophobia 

      5 years ago

      Thank you!

    • KA Pederson profile image

      Kim Anne 

      5 years ago from Texas

      Great mini refresher! Voting you up for "useful" :)

    working

    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://hubpages.com/privacy-policy#gdpr

    Show Details
    Necessary
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
    Features
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Marketing
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Statistics
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)