Answer:
[Ar]3d^{10}4s^{2}4p^{6}
Explanation:
Electronic Configuration of Bromine : [Ar]3d^{10}4s^{2}4p^{5}
At oxidation state -1, electronic Configuration of Bromine : [Ar]3d^{10}4s^{2}4p^{6}
Answer:
Lattice energy is an estimate of the bond <u>strength.</u>
The heat is involved in the production of 5.0 mol of MgO is 180 Kj
calculation
2 Mg (s) +O2 → 2 MgO
From the equation above two moles of MgO is used therefore
72.3 is for 2 moles
that is 72.3 kj = 2moles
? = 5 moles
by cross multiplication
= 72.3 kj × 5/2 = 180 Kj
A.
16 16 0
N -> O + e
7 8 -1
B.
40 40 0
K -> Ca + e
19 20 -1
