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Structure of the Atom — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
MCQ
Which of the following has the highest n/p ratio:
  • A
    $^{3}_1\text{H}$
  • B
    $^{235}_{92}\text{U}$
  • C
    $^{14}_{6}\text{C}$
  • D
    $^{222}_{88}\text{Ra}$
✓

Answer

  1. $^{235}_{92}\text{U}$

Explanation:

Every element has a proton, neutron, and electron. The number of protons is equal to the atomic number, and the number of electrons is equal the protons, unless it is an ion. To determine the number of neutrons in an element you subtract the atomic number from the atomic mass of the element.

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