triangle ABC is an iscosceles triangle with AB=AC=Bc .the length of the altitude from A on BC is 5cm . find BC
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Why are chloride ions negatively charged?
When these atoms gain electrons, they acquire a negative charge because they now possess more electrons than protons. Negatively charged ions are called anions. ... A neutral chlorine atom has seven electrons in its outermost shell. Only one more electron is needed to achieve an octet in chlorine's valence shell
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