This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.

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a) Isotopu tofauti za elementi kwa ujumla zina sifa sawa za kimwili na kikemikali kwa sababu zina idadi sawa ya protoni na elektroni. Idadi ya elektroni, hasa elektroni za valensi, huamua sifa za kikemikali za elementi. Ingawa isotopu hutofautiana kwa idadi ya nyutroni, nyutroni hazishiriki moja kwa moja katika miitikio ya kikemikali.
b) Kiini cha atomi ya haidrojeni 1 (protium) kina protoni moja na hakuna nyutroni. Kiini cha atomi ya haidrojeni 2 (deuterium) kina protoni moja na nyutroni moja. Tofauti kuu ni idadi ya nyutroni katika kiini.
c) • Isotopu ni atomi za elementi moja ambazo zina idadi sawa ya protoni lakini idadi tofauti ya nyutroni. Hivyo, zina namba atomiki sawa lakini namba za masi tofauti. • Masi atomiki ya kiasi (Relative Atomic Mass, Ar) ni wastani wa masi za isotopu zote zinazopatikana kiasili za elementi, ukizingatia wingi wa kila isotopu. Inawakilisha masi ya wastani ya atomi za elementi hiyo.
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a) Isotopu tofauti za elementi kwa ujumla zina sifa sawa za kimwili na kikemikali kwa sababu zina idadi sawa ya protoni na elektroni.
This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.