Mg
......
Electron configuration:
²⁴₁₂Mg: 1s² 2s² 2p⁶ 3s²
>>> 3s² - valence shell with 2 valence electrons
If the humidity of the room is low, the water that contacts the air directly could evaporate and takes some energy from the bulk thus decreasing its temperature steadily. This allows the water to have a lower temperature.
Answer:
H3PO4
Explanation:
The H3PO4 is an acid as it release H+ ion when dissolved in a solution and H3PO4 is known as phosphoric acid
B. The third shell would be empty so that the eight electrons in the second level would be outermost after the atom loses one electron.
