4. A student's prediction for the products of this reaction are below. What did this student do wrong?*
1 point
CH4(g) + O2(g) → Q2H4(g) + C(9)

it's c. elements are placed in rows based on how may valencies electrons have.

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i  

i think slash and