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Question 0

The atomic number of caesium is 55 and its atomic mass is 133. The nucleus of caesium atom therefore contains

  • A.78 protons and 55 elections
  • B.55 protons and 78 neutrons
  • C.55 neutrons 78 electrons
  • D.78 protons and 55 neutrons
  • E.
Objective

Question details

Exam body
JAMB
Subject
Chemistry
Year
1989
Question no.
#0
Type
Objective
Previous · Q0Elements X and Y have electronic configurations 1s 2 2s 2 2p 6 and 1s 2 2s 2 2p… Next · Q0 Four elements P,Q, R and S have atomic numbers of 4, 10, 12 and 14 respectively…

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