Q. Which property is NOT the same for isotopes of an element?

किसी तत्व के समस्थानिकों के लिए कौन सा गुण समान नहीं है?

A
Atomic number
परमाणु संख्या
B
Atomic mass
परमाणु द्रव्यमान
C
Chemical properties
रासायनिक गुण
D
Number of electrons in neutral atom
तटस्थ परमाणु में इलेक्ट्रॉनों की संख्या

Explanation

Isotopes of an element have:

  • Same atomic number (same number of protons) ✓
  • Same chemical properties (same electron configuration) ✓
  • Same number of electrons in neutral atoms ✓
  • Different atomic mass (different number of neutrons) ✗

Isotopes differ only in the number of neutrons, which affects atomic mass but not chemical behavior.

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Atomic Structure & Bonding Chemical Equilibrium Thermodynamics Electrochemistry Gaseous & Liquid States

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