Chemistry

posted by .

I have a compound of Na2subscriptCO3subscript. The cation it breaks into is NA+1 in the upper righthand corner, and the anion is CO3subscript,-2in the upper right hand corner. Where did the anion numbers come from? How can you tell what the charge is? I know you either look in the periodic table square, or at the top of the periodic column, but I don't see where the charge of -2 comes from since carbon is in the +4 column. Thanks for clarifying this.

  • Chemistry -

    Na has a +1 charge because its in the first group of the periodic table. For the CO3, didn't the teacher give you a sheet of common ions that tells you what the charges are? That was what my teacher did. But if you don't have the sheet, I THINK the reason why it has a -2 charge is because of the oxygen. If do not do anything with the C.

  • Chemistry -

    Chopsticks is right. Usually you memorize a set of common anions. Here is a link to a set that includes more than just the common ones.
    (Broken Link Removed)
    But in your case, it is far easier to do it another way. Sodium carbonate is Na2CO3. You know Na is +1 and two of them make a total of +2 on the Na. Since every compound is neutral, you KNOW the remainder is -2 (the carbonate or CO3). If you wanted to determine C, you could do that also. Na is +1, that makes a total of +2. Oxygen is -2 which makes a total of -6 for three of them. Now, what must C be to make zer?. It must be +4.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    I need help with getting started: 1.The crystal structure of an ionic compound consists of alternating cations and anions lying next to each other in three dimensions. If the cation radius is 55.1% of the anion radius and the distance …
  2. Chemistry

    I need help with getting started: 1.The crystal structure of an ionic compound consists of alternating cations and anions lying next to each other in three dimensions. If the cation radius is 55.1% of the anion radius and the distance …
  3. Chemistry

    I am working with cations, and anions. Are you supposed to have the subscripts balance, or the top numbers?
  4. Chemistry

    I have to fill in the missing values in this invisible chart The cation is Sn+2, the Anion is SiO3^-2. I think the compound is SnSiO3, and the name is silicite. Is this right?
  5. Chem

    so I have a set of fill in the blanks for symbol, atomic number, mass number, protons, neutrons electrons and charge. Protons: 6 Neutrons: 8 Electrons: 2 I said the atomic number was 6, the mass number was 12, and the charge was +4. …
  6. Physics

    A rectangle has a length of 2d and a height of d. Each of the following three charges is located at a corner of the rectangle: +q1 (upper left corner), +q2 (lower right corner), and -q (lower left corner). The net electric field at …
  7. chemistry

    Consider the ionization constants hypochlorous acid (HOCl) : Ka = 3.5 × 10−8; ammonia (NH3) : Kb = 1.8×10−5. A solution of ammonium hypochlorite (NH4OCl) is 1. acidic, because the cation hydrolyzes to a greater extent …
  8. AP Chemistry

    Consider the ionization constants cyanic acid (HOCN) : Ka= 3.5×10−4; ammonia (NH3): Kb= 1.8×10−5. A solution of ammonium cyanate (NH4OCN) is 1. acidic, because the cation and the anion hydrolyze to the same extent. 2. …
  9. Physics

    Three charged particles are arranged on corners of a square as shown in the figure below, with charge -Q on both the particle at the upper left corner and the particle on the lower right corner, and charge +2Q on the particle at the …
  10. Chemistry

    Give an example of one polyatomic cation and one polyatomic anion. Show how these ions combine to make a compound. My thinking: Cation-ClO Anion-K How they form, I don't know?

More Similar Questions