Answer:
A
Explanation:
Sodium has 11 electrons and Magnesium has 12 electrons. Since here you need to consider atoms, they must have equal amount of protons as electrons to be considered neutral, and so an atom.
So simply 11+12 =23
I don't know how 5°C cooled to 85°C but the answer would be 12.878L
N 1s²2s²2p³ + 3e⁻ → N⁻³ 1s²2s²2p⁶ [Ne]
3 electrons
Maybe you can apply the Ohms law to this question:
Ohms law is voltage=current (I) x resistance (R)
I'm afraid that is the only concept i know abt electricity. i hope u find a solution;)