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AP EAMCET202017 Sep 2020Evening ShiftChemistryStructure of AtomActual

The number of protons, electrons and neutrons in a species are equal to 17,18 and 18 respectively. Which of the following will be the proper symbol of this species?

Options

  1. A( ₁₇³⁵ Cl )
  2. B( ₁₇³⁵ Cl ⁻ )
  3. C( ₁₇³⁶ Cl )
  4. D( ₁₇³⁶ Cl ⁻ )

Correct answer

B. ( ₁₇³⁵ Cl ⁻ )

Step-by-step solution

(p=17, e=18, n=18 ) means, (Z=17 ) element is chlorine, which contains one electron more ((17+1) ), so it is chloride ion, ( Cl ⁻ ). ( ) Symbol: ( ₁₇³⁵ Cl ⁻ ); Mass number, (A=n+p=18+17=35 ) Atomic number, (Z=17 )

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