Answer:
The answer is in the problem
Explanation:
As general rule of number of oxygen is -2:
O → -2
Alkali metals (Li, Na, K) are always +1
Na → +1
Alkali earth methals (Be, Mg, Ca...) are always +2
Ca → +2
The halogen group (F, Cl, Br...) is always -1
F → -1
The oxidation number of Si (+/- 4)
Aluminium is, usually +3
And to complete the octet rule in nitrogen, 3 electrons are required. That means:
N → -3
Bohr's Model agree with Thompson's model because Bohr concluded that packets of energy are absorbed or emitted by the atoms when an electron changes shell. Thompson's conclusion states that atoms have small, negatively charged particles (referring to Electrons) as part of their internal structure.
A balanced equation for the precipitation of barium sulfate after mixing aqueous ammonium sulfate and barium chloride is as follows:
(NH₄)₂SO₄ (aq) + BaCl₂ (aq) ------> BaSO₄(s) + 2NH₄Cl (aq)
As suggested by the equation, 1 molecule of ammonium sulfate reacts with 1 molecule of barium chloride and forms 1 molecule of barium sulfate and 1 molecule of ammonium chloride.
No it’s -3 not +3
There is an order on the periodic table
Group 1 =+1
Group2=+2
Group 3=+3
Group 5=-3 (which is the group p is in)
Group 6=-2
Group 7=-1