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NEET CHEMISTRYStructure of AtomEasy

Question

The number of protons, neutrons and electrons in 71175Lu^{175}_{71}\text{Lu}, respectively, are:

A

104, 71 and 71

B

71, 71 and 104

C

175, 104 and 71

D

71, 104 and 71

Step-by-Step Solution

For an element represented as ZAX_{Z}^{A}\text{X}, ZZ represents the atomic number and AA represents the mass number.

  1. Atomic Number (ZZ): This is equal to the number of protons. For Lutetium (71175Lu^{175}_{71}\text{Lu}), Z=71Z = 71. Therefore, the number of protons is 71.
  2. Electrons: In a neutral atom, the number of electrons is equal to the number of protons. Thus, the number of electrons is 71.
  3. Mass Number (AA): This is the sum of protons and neutrons (A=p+nA = p + n). Here, A=175A = 175.
  4. Neutrons (nn): The number of neutrons is calculated as A−Z=175−71=104A - Z = 175 - 71 = 104.

Hence, the number of protons, neutrons, and electrons are 71, 104, and 71, respectively , , .

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from Structure of Atom. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYStructure of Atomnumberprotonsneutronselectronstextlu

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