In a molecule of water, the electrons are more strongly attracted to the hydrogen nuclei than to the oxygen nucleus. Therefore electrons spend more time near the hydrogen nuclei and there is an unequal sharing of electrons.A. TrueB. False

#1) Koryo built a wall at the Yalu River in the eleventh century to help keep out what enemy?

The reason why koryo built a wall at the Yalu River in the eleventh century was to help keep out Khitans. Out all the options A) is the correct choice.

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