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{"name": "Atomic structure", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"tags": [], "parts": [{"showCorrectAnswer": true, "scripts": {}, "prompt": "<p>Consider the element $^\\var{m}_\\var{n}X$; how many neutrons does $X$ have?</p>\n<p>[[0]]</p>", "type": "gapfill", "gaps": [{"showCorrectAnswer": true, "maxValue": "{m}-{n}", "showFractionHint": true, "correctAnswerFraction": false, "mustBeReduced": false, "correctAnswerStyle": "plain", "notationStyles": ["plain", "en", "si-en"], "mustBeReducedPC": 0, "useCustomName": false, "marks": "4", "allowFractions": false, "unitTests": [], "scripts": {}, "type": "numberentry", "customName": "", "showFeedbackIcon": true, "adaptiveMarkingPenalty": 0, "minValue": "{m}-{n}", "variableReplacements": [], "extendBaseMarkingAlgorithm": true, "customMarkingAlgorithm": "", "variableReplacementStrategy": "originalfirst"}], "customName": "", "showFeedbackIcon": true, "adaptiveMarkingPenalty": 0, "extendBaseMarkingAlgorithm": true, "customMarkingAlgorithm": "", "variableReplacementStrategy": "originalfirst", "marks": 0, "sortAnswers": false, "useCustomName": false, "variableReplacements": [], "unitTests": []}, {"showCorrectAnswer": true, "scripts": {}, "prompt": "<p>A particular atom, in its neutral form, has {a} electrons; how many electrons will a corresponding positive ion have?</p>\n<p>[[0]]</p>", "type": "gapfill", "gaps": [{"showCorrectAnswer": true, "maxValue": "{a}-1", "showFractionHint": true, "correctAnswerFraction": false, "mustBeReduced": false, "correctAnswerStyle": "plain", "notationStyles": ["plain", "en", "si-en"], "mustBeReducedPC": 0, "useCustomName": false, "marks": "3", "allowFractions": false, "unitTests": [], "scripts": {}, "type": "numberentry", "customName": "", "showFeedbackIcon": true, "adaptiveMarkingPenalty": 0, "minValue": "{{a}-118}", "variableReplacements": [], "extendBaseMarkingAlgorithm": true, "customMarkingAlgorithm": "", "variableReplacementStrategy": "originalfirst"}], "customName": "", "showFeedbackIcon": true, "adaptiveMarkingPenalty": 0, "extendBaseMarkingAlgorithm": true, "customMarkingAlgorithm": "", "variableReplacementStrategy": "originalfirst", "marks": 0, "sortAnswers": false, "useCustomName": false, "variableReplacements": [], "unitTests": []}, {"showCorrectAnswer": true, "scripts": {}, "prompt": "<p>A particular atom, in its neutral form, has {b} electrons; how many electrons will a corresponding negative ion have?</p>\n<p>[[0]]</p>", "type": "gapfill", "gaps": [{"showCorrectAnswer": true, "maxValue": "{b}+99", "showFractionHint": true, "correctAnswerFraction": false, "mustBeReduced": false, "correctAnswerStyle": "plain", "notationStyles": ["plain", "en", "si-en"], "mustBeReducedPC": 0, "useCustomName": false, "marks": "3", "allowFractions": false, "unitTests": [], "scripts": {}, "type": "numberentry", "customName": "", "showFeedbackIcon": true, "adaptiveMarkingPenalty": 0, "minValue": "{b}+1", "variableReplacements": [], "extendBaseMarkingAlgorithm": true, "customMarkingAlgorithm": "", "variableReplacementStrategy": "originalfirst"}], "customName": "", "showFeedbackIcon": true, "adaptiveMarkingPenalty": 0, "extendBaseMarkingAlgorithm": true, "customMarkingAlgorithm": "", "variableReplacementStrategy": "originalfirst", "marks": 0, "sortAnswers": false, "useCustomName": false, "variableReplacements": [], "unitTests": []}], "variablesTest": {"maxRuns": 100, "condition": ""}, "preamble": {"css": "", "js": ""}, "metadata": {"description": "<p>Basic properties of atoms</p>", "licence": "Creative Commons Attribution 4.0 International"}, "rulesets": {}, "functions": {}, "ungrouped_variables": ["n", "m", "a", "b"], "name": "Atomic structure", "advice": "", "statement": "<p>In general, an atom is made of protons, neutrons and electrons. An ion is an atom that has a net electrical charge.</p>", "extensions": [], "variables": {"m": {"name": "m", "description": "<p>Atomic mass = atomic number + number of neutrons</p>\n<p>Maximum value is set as 118 (max number of protons) + 176 = 294 (max atomic mass for oganesson)</p>", "templateType": "anything", "group": "Ungrouped variables", "definition": "n+random(1..176)"}, "a": {"name": "a", "description": "<p>Number of electrons in neutral atom (118 is the maximum number, corresponding to<a href=\"https://en.wikipedia.org/wiki/Oganesson\" title=\"\">oganesson</a>).</p>", "templateType": "anything", "group": "Ungrouped variables", "definition": "random(1..118)"}, "b": {"name": "b", "description": "<p>Number of electrons in neutral atom (118 is the maximum number, corresponding to<a href=\"https://en.wikipedia.org/wiki/Oganesson\" title=\"\">oganesson</a>).</p>", "templateType": "anything", "group": "Ungrouped variables", "definition": "random(1..118)"}, "n": {"name": "n", "description": "<p>Atomic number: number of&nbsp;protons&nbsp;(118 is the maximum number, corresponding to&nbsp;<a href=\"https://en.wikipedia.org/wiki/Oganesson\" title=\"\">oganesson</a>).</p>", "templateType": "anything", "group": "Ungrouped variables", "definition": "random(1..118)"}}, "variable_groups": [], "contributors": [{"name": "Mario Orsi", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/427/"}, {"name": "Katie Lester", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/586/"}]}]}], "contributors": [{"name": "Mario Orsi", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/427/"}, {"name": "Katie Lester", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/586/"}]}