Answer:
1s2, 2s2, 2p6, 3s2, 3p2
Explanation:
see the guide on the given electron configuration examples
Answer:
(4) 230 kPa
Explanation:
The temperature is constant, so the only variables are pressure and volume.
We can use Boyle’s Law.

Divide both sides of the equation by
.




Answer:
2 that is Calcium (Ca) and Manganese (Mn)
Explanation:
Add dithizone in chloroform and look for a red complex formation.
I think you want to ask the complete ionic equation and net ionic equation. For complete ionic equation: 3Ba2+ + 6Cl- + 2Al3+ + 3SO42- -->3BaSO4 + 2Al3+ + 6Cl-. For net ionic equation: 3Ba2+ + 3SO42- -->3BaSO4.