Is this ground or excited state?
1s2 2s2 2p6 3s1 3p1

If a 12-v battery is connected to a circuit that has a current of 3.0 a, what is the total resistance in the circuit? 36 ohms 4 ohms 0.25 ohms

What layer of the atmosphere is directly above the troposphere?

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as