Hiya if you answr more than 5 = extra points please answer and least 3 lol and maybe explain how i can do it
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The picture of correct answer is attached it is the second one from the left since it has 5 electrons in outermost shell so it can share 3 electrons to complete the octet rule, while first one contains only one electron in outermost shell so it easier to be lost, third one has 8 electrons so it has complete valence shell and last one with only two electrons in outermost shell so it is easier to lose these two electrons.
from 5 to 7 electrons on outermost shell can form covalent bond
from 5 to 7 electrons on outermost shell can form covalent bond