Have 7 valence electrons, allowing them to more easily achieve an octet of electrons and become stable.
Answer:
The appropriate alternative is option C "".
Explanation:
The given value is:
Energy of photon,
E =
As we know,
h =
Now,
The frequency of the light will be:
⇒
On substituting the given values, we get
⇒
On solving, we get
⇒
Formula of sodium phosphate = Na₃PO₄
So, one mole of sodium phosphate molecules have 3 moles of Na atoms
Then, 1.6 moles of Na₃PO₄ will have: 1.6 × 3 = 4.8 moles of sodium atoms will be present
1p is not possible because it goes like this 1s2 2s2 2p6
H2(g) + Cl2(g) = 2 HCl(aq) (balanced equation)
1, 1, 2 (coefficients)