SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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positive
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negative
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Either A or B
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None of the above
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Detailed explanation-1: -non-metal atoms gain electrons to form negative ions (anions )
Detailed explanation-2: -The metals form positively-charged ions and the non-metals form negatively-charged ions.
Detailed explanation-3: -Negative ions are called anions . Oxygen is in group 6. An oxygen atom has six electrons in its outer shell. The atom is more stable if it has a full outer shell. An oxygen atom can gain two electrons to fill its outer shell.
Detailed explanation-4: -A negative ion is formed by the addition of negatively charged electrons. The protons do not change. Only non-metal atoms with l-3 electrons missing in the outer level add electrons to complete that level like the nearest rare gas. Metals never form negative ions.
Detailed explanation-5: -Metals tend to lose electrons and form positively charged ions called cations. Non-metals tend to gain electrons and form negatively charged ions called anions.