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It assesses knowledge in subjects relevant to the candidate’s chosen course of study.","tags","utme jamb joint admission matriculation board unified tertiary matriculation examination nigeria africa","version","vip","location",{"_390":391,"_392":393},"type","Point","coordinates",[394,395],9.082,10.3671,"ng","priority",5,"createdOn",1755987353430,"updatedOn","questionsCount",29915,"courseCount",20,"examKey","questionData",{"_369":409,"_410":411,"_412":413,"_278":415,"_416":417,"_263":370,"_418":419,"_420":421,"_110":426},"KUZgNilMQ2C8vjCPzRqaCmse46KCPr","q","\\(^{226}_{88}Ra\\) → \\(^x_{86}Rn\\) + alpha particle","ans",[414],3,"2017","course","chemistry","exp","\\(^{226}_{88}Ra\\) → \\(^x_{86}Rn\\) + \\(^4_{2}He\\)
\n
\n\\(^4_{2}He\\) = alpha particle
\n
\nconsidering the summation of the mass number
\n
\n226 = x + 4
\n
\nx = 226 - 4
\n
\nx = 222","opts",[422,423,424,425],"226","220","227","222",21,"21","initComment","initReply","actionData","errors"]

JAMB - Chemistry (2017 - No. 21)

Explanation

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