Saturday
February 28, 2015

Homework Help: chemistry

Posted by me on Saturday, July 10, 2010 at 2:48am.

can anyone explain to me this i dont understand it.

Radicals
Certain groups of different atoms will join together and act
as a single unit when forming compounds. Such a group
of atoms is called a radical. In the compound calcium
carbonate, written CaCO3, the carbonate group CO3 is
a radical. The carbonate group has a negative valence of 2,
and it combines directly with one atom of calcium, which
has a positive valence of 2. Some other examples of radicals
are sulfate (SO4
–2), nitrate (NO3
–1), hydroxide (OH–1), and
ammonium (NH4
+1).
If a subscript is needed with a radical, the symbol for the
radical is placed inside parentheses. Thus, the formula for
magnesium nitrate is written Mg(NO3)2.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Science - Lithium atoms, like hydrogen atoms, have only a single electron in ...
Chemistry - Elements are constantly forming compounds, and the atoms of ...
Chem - Superscript 15 How many moles of Pb is 9.3 X 1015 atoms of pb? 1 mol of ...
Chemistry - Hope you dont mind I have 3 more that I dont understand 1)Draw the ...
chemistry - what is the mass in grams? a) 3.011 x 10^23 atoms F b)1.50 x 10^23 ...
Chemistry - For each definition, find a corresponding term from the following ...
Chemistry - For each definition, find a corresponding term from the following ...
chemistry - if compound forms by ionic bonding, which is not true? A. a ...
chemistry - what is the mass in grams? a) 3.011 x 10^23 atoms F b)1.50 x 10^23 ...
chemistry - what is the mass in grams? a) 3.011 x 10^23 atoms F b)1.50 x 10^23 ...

Members