Umm.. Hi there! Can someone please help me out with this? (only for those who know the answer) Bcoz I really need this rn :(

DUE AFTERRR LUNCHH! :(:(:(:(

If your answer is NONSENSE it will be deleted as soon as possible!

But if your answer is CORRECT, HELPFUL, HAS AN EXPLANATION, I'll chose your answer as the BRAINLIEST ANSWER!​

The name of the element is Potassium.

it's got 19 electrons in total and 1 valence electron.

electrons are arranged in the respective orbitals as (2, 8, 8, 1). from lowest to highest ~ {s, p, d, f}

symbol of the element is K.

no clue honey ima just get a life and go home

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.