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Write the symbol of the appropriate element in each space.<\/strong><\/p>\n","overallFeedback":[{"from":0,"to":100}],"showSolutions":"Show solution","tryAgain":"Retry","checkAnswer":"Check","notFilledOut":"Please fill in all blanks to view solution","answerIsCorrect":"':ans' is correct","answerIsWrong":"':ans' is wrong","answeredCorrectly":"Answered correctly","answeredIncorrectly":"Answered incorrectly","solutionLabel":"Correct answer:","inputLabel":"Blank input @num of @total","inputHasTipLabel":"Tip available","tipLabel":"Tip","behaviour":{"enableRetry":true,"enableSolutionsButton":false,"enableCheckButton":true,"autoCheck":false,"caseSensitive":true,"showSolutionsRequiresInput":true,"separateLines":false,"confirmCheckDialog":false,"confirmRetryDialog":false,"acceptSpellingErrors":false},"scoreBarLabel":"You got :num out of :total points","confirmCheck":{"header":"Finish ?","body":"Are you sure you wish to finish ?","cancelLabel":"Cancel","confirmLabel":"Finish"},"confirmRetry":{"header":"Retry ?","body":"Are you sure you wish to retry ?","cancelLabel":"Cancel","confirmLabel":"Confirm"},"questions":["

a) Forms a 2+ ion that has electron configuration 1s\u00b22s\u00b22p\u20763s\u00b23p\u20763d\u00b9\u20704s\u00b24p\u20764d\u2076: *Ru*<\/p>\n\n

b) Forms a 3+ ion that has electron configuration [Kr]4d\u00b2. *Nb*<\/p>\n"],"media":{"disableImageZooming":false},"a11yCheck":"Check the answers. The responses will be marked as correct, incorrect, or unanswered.","a11yShowSolution":"Show the solution. The task will be marked with its correct solution.","a11yRetry":"Retry the task. Reset all responses and start the task over again.","a11yCheckingModeHeader":"Checking mode"},"library":"H5P.Blanks 1.14","metadata":{"contentType":"Fill in the Blanks","license":"U","title":"Day04_q6"},"subContentId":"e1f22633-7ce8-492d-892e-3520d97145ce"},"useSeparator":"auto"},{"content":{"params":{"panels":[{"content":{"params":{"text":"

Each electron configuration given has incompletely filled d-orbitals, therefore these are transition elements. When transition elements form cations, electrons from the outermost shell are lost first.<\/p>\n\n

a) To form a 2+ ion, two s<\/em> electrons must be lost. Therefore, adding two s<\/em> electrons to the configuration given should result in the electron configuration of the uncharged atom. Adding two s<\/em> electrons to the outermost (n<\/em> = 5) shell, gives 1s\u00b22s\u00b22p\u20763s\u00b23p\u20763d\u00b9\u20704s\u00b24p\u20764d\u20765s\u00b2, which is the electron configuration of Ru in its ground state.<\/p>\n\n

b) Similarly, when three electrons are removed from the 5s and 4d orbitals of Nb, Nb\u00b3\u207a has the given electron configuration.<\/p>\n"},"library":"H5P.AdvancedText 1.1","subContentId":"08dbec4c-cc93-46fd-9abc-60c6e2321c0f","metadata":{"contentType":"Text","license":"U","title":"Day04_q6"}},"title":"Solution"}],"hTag":"h2"},"library":"H5P.Accordion 1.0","metadata":{"contentType":"Accordion","license":"U","title":"Day04_q6"},"subContentId":"cd4e7c7b-9f1a-43e8-bb33-ed131e77211c"},"useSeparator":"auto"}]}

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