[{"question":"Lantanoidy s\u00fa","answers":["s - prvky","p - prvky","d- prvky","f- prvky"],"correct":"f- prvky","order":"1"},{"question":"Lantanoidy sa nach\u00e1dzaj\u00fa v","answers":["druhej peri\u00f3de","tretej peri\u00f3de","piatej peri\u00f3de","\u0161iestej peri\u00f3de"],"correct":"\u0161iestej peri\u00f3de","order":"2"},{"question":"Uve\u010fte nespr\u00e1vne tvrdenie. Lantanoidy s\u00fa","answers":["nereakt\u00edvne kovy","striebroleskl\u00e9 kovy","neu\u0161\u013eachtil\u00e9 kovy","m\u00e4kk\u00e9"],"correct":"nereakt\u00edvne kovy","order":"3"},{"question":"Uve\u010fte nespr\u00e1vne tvrdenie. Lantanoidy s\u00fa","answers":["reakt\u00edvne kovy","tvrd\u00e9 kovy","striebroleskl\u00e9 kovy","neu\u0161\u013eachtil\u00e9 kovy"],"correct":"tvrd\u00e9 kovy","order":"4"},{"question":"Uve\u010fte zna\u010dku Erbia","answers":["Eb","Ea","Er","E"],"correct":"Er","order":"5"},{"question":"Uve\u010fte zna\u010dku Lut\u00e9cia","answers":["Lc","Lu","Lt","L"],"correct":"Lu","order":"6"},{"question":"Uve\u010fte nespr\u00e1vne tvrdenie:","answers":["Z lantanoidov vznikaj\u00fa v kysl\u00edku oxidy","Z lantanoidov vznikaj\u00fa v kysl\u00edku hydroxidy","Z lantanoidov sa pri reakcii s vod\u00edkom tvoria hydridy","Z lantanoidov pri zohrievan\u00ed s halog\u00e9nmi vznikaj\u00fa halogenidy"],"correct":"Z lantanoidov vznikaj\u00fa v kysl\u00edku hydroxidy","order":"7"},{"question":"Uve\u010fte zna\u010dku Holmia","answers":["Ho","Hl","Hm","Ha"],"correct":"Ho","order":"8"},{"question":"Uve\u010fte nespr\u00e1vne tvrdenie:","answers":["Lantanoidy s\u00fa kujn\u00e9","Lantanoidy s\u00fa \u0165a\u017en\u00e9","Lantanoidy s\u00fa ve\u013emi reakt\u00edvne","Reaktivita lantanoidov kles\u00e1 s rast\u00facim polomerom"],"correct":"Reaktivita lantanoidov kles\u00e1 s rast\u00facim polomerom","order":"9"},{"question":"Uve\u010fte zna\u010dku prvku C\u00e9r","answers":["C","Cr","Ce","Cs"],"correct":"Ce","order":"10"}]