6.
There are 4 atoms in Fe2O2: 2 atoms of iron (Fe) and 2 atoms of oxygen (O).
Two.
6
There are 6 atoms in the compound H2C2O2: 2 hydrogen (H) atoms, 2 carbon (C) atoms, and 2 oxygen (O) atoms.
There are 3 atoms in a molecule of water, 2 hydrogen (H) atoms and 1 oxygen atom (O). H2 O
Cu(NO3)2 has 9 atoms 1 Cu atom 2 N atoms 6 O atoms
Three: 1 C and 2 O atoms
There are 6 oxygen atoms in Zn(ClO3)2.
2. S(unimportant)O(xygen)2
There are 11 atoms in Al2O3: 2 aluminum atoms, abbreviated as Al, and 3 oxygen atoms, represented as O.
Hydrogen peroxide has two atoms of hydrogen and oxygen.
K= 2 C= 1 O=3 K2CO3= 6 atoms