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How many protons does 4020Ca contain?
Classroom
Chemistry Classroom
Waec
Waec 2009
More Topics
How many protons does
40
20[sub][/sub]Ca contain?
SchoolNGR Classroom
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
A
20
B
30
C
40
D
60
Show Answer
Show Explanation
Correct Answer:
Option A
Explanation:
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