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The atomic number of caesium is 55 and its atomic mass is 133. The nucleus of caesium ...
Classroom
Chemistry Classroom
Jamb
Jamb 1989
Atomic Structure And Bonding
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The atomic number of caesium is 55 and its atomic mass is 133. The nucleus of caesium atom therefore contains
SchoolNGR Classroom
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
A
78 protons and 55 elections
B
55 protons and 78 neutrons
C
55 neutrons 78 electrons
D
78 protons and 55 neutrons
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Correct Answer:
Option B
Explanation:
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