El ruido es una forma de contaminación es falso o verdadero

Sorry i dont understand the question can you rephase it?

Is a renewable energy source that's highly environmentally friendly.hope this is what you're looking for. have a great day! : d

So the main goal for the elements is stability which is a complete/full valence shell and typically the magic number for a stable element is 8 valence electron but not always. so elements to the left of the periodic table tend to be way less stable then those on the right, so the elements on the left are much more reactive.