SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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This element has 6 valence electrons and its proton number is 8. In which period does the element located in Periodic Table of Elements?
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Period 2
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Period 6
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Period 8
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None of the above
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Explanation:
Detailed explanation-1: -Therefore, the second-row element that has 6 valence electrons and valency of 2 is oxygen.
Detailed explanation-2: -Period 2 elements (carbon, nitrogen, oxygen, fluorine and neon) obey the octet rule in that they need eight electrons to complete their valence shell (lithium and beryllium obey duet rule, boron is electron deficient.), where at most eight electrons can be accommodated: two in the 2s orbital and six in the 2p subshell.
Detailed explanation-3: -The horizontal rows of the periodic table are called periods. Period 2, or the second period, refers to the second row from the top of the periodic table.
There is 1 question to complete.