Valence electrons, then, are electrons in the outermost shell of the atom that determine an atom's or group's ability to bond with others. In chemistry, a group refers to two or more atoms that are specifically arranged.
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Answer:
do u mean pentagon from 9/11
Explanation:
there was no hexagon
Answer:
At the end of the eighteenth century, village communities began to disband under the pressure of new forces
The ozone layer protects us from the harmful emission of rays directly to the environment. Absent this added layer of protection we humans will be susceptible to various forms of cancer due to over radiation and eye problems such as cataracts. It is estimated that 10% of the world's population will face the consequences of ozone depletion this year and these numbers were continue to rise as time progresses.
Answer:1st Big Bang 2nd Sun got borned by millions of tiny stars,space materials all collided together.3rd sun is in our solar system 4th in the future scientists don’t know when but the sun will get bigger swallowing almost all of our solar system (not the universe) and will blow up this is the natural life cycle of the sun predicted
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