It would be Cu(NO3)2. The NO3 has a negative charge. Copper has a positive 2. In order to have a stable compound, you would need 2 NO3s, which is why there is a 2 outside of the NO3. I hope this helps.
Answer:
ELEMENTS
Explanation:
CUZ AN A
ELEMENT IS A GROUP OF ATOMS THAT CANNOT BE BROKEN DOWN BY ANY CHEMICAL OR PHYSICAL MEAN
To illustrate the Lewis structure,
P has 5 valence electrons
O has 6 valence electrons (each for 4 oxygen)
And finally, for every negative charge, there is an additional valence electron
We should add these all up = 5 + 24 + 3 = 32 valence electrons
With this, we can be guided to illustrate the lewis structure as P as central atom and the 3 oxygen each with a single bond with P and 1 oxygen with a double bond with P. We place the valence electrons until octet rule is satisfied,
we will be left with 12 lone pairs for phosphate ion.
Theoretically, You can calculate the combined force, which is known as "Net force", in real life, combination of force does make sense only when you're talking about their addition [ which must be in same direction ]
Hope this helps!