Questions form one & two

1.De fine the following terms
   a) valiancy
   b) Oxidatio state
   c) Radical
   d) Empirical formula
   e) Ionic bond
   f) Binary compounds

2. State the values of each of the following atoms
    a)Sodiu
    b)Magnesium
    c)Aluminium
    d)Sulphur
    e)Fluorine
    d)Neon

3. A compound of sulphur and oxygen is 40.1% sulphur by mass what is the empirical formula for compound?  ( RAM of S and O are 32.07 and 16.00).

4. Write the chemical formula of the following compounds
      a)Sodium hydrogen carbonate
      b)Silver trioxonitrate
      c)Copper (i)oxide
      d)Aluminium tetraoxosulphate

5. Write down two ions of each of the following elements.
     a) Fe
     b) Cu
     c) Pb
     d)Mn

6. an atom of element x with atomic number 11 and an atom of Element TV with the atomic   number 9 combine to form compounds.
   a)Writ the formula of the compound
   b)State the type of Bond present in the compound
   c)Identify the type of structure formed