Question:
Identify the correct statements from the following:
I) Isotopes of an element show different chemical behaviour
II) Lyman series of lines of hydrogen spectrum appear in UV region
III) The oscillating electric and magnetic field components of electromagnetic radiation are perpendicular to each other and both are perpendicular to the direction of propagation of radiation
Identify the correct statements from the following:
I) Isotopes of an element show different chemical behaviour
II) Lyman series of lines of hydrogen spectrum appear in UV region
III) The oscillating electric and magnetic field components of electromagnetic radiation are perpendicular to each other and both are perpendicular to the direction of propagation of radiation
I) Isotopes of an element show different chemical behaviour
II) Lyman series of lines of hydrogen spectrum appear in UV region
III) The oscillating electric and magnetic field components of electromagnetic radiation are perpendicular to each other and both are perpendicular to the direction of propagation of radiation
Show Hint
Isotopes differ in nuclear properties, but not in chemical properties.
Updated On: Mar 18, 2026
- II & III only
- I & II only
- I & III only
- I, II, III
Show Solution
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The Correct Option is A
Solution and Explanation
Step 1: Statement analysis
- I) Isotopes have the same chemical properties because they have same electron configuration.
- II) Lyman series is in UV region. Correct.
- III) EM waves have electric and magnetic fields perpendicular to each other and direction of propagation. Correct.
Step 2: Conclusion
Only statements II and III are correct.
- I) Isotopes have the same chemical properties because they have same electron configuration.
- II) Lyman series is in UV region. Correct.
- III) EM waves have electric and magnetic fields perpendicular to each other and direction of propagation. Correct.
Step 2: Conclusion
Only statements II and III are correct.
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