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ஹீலியம் அணுக்கருவில் இருப்பவை:

  1. 2 பாசிட்ரான், 2 நியூட்ரான்கள்
  2. 2 புரோட்டான்கள், 2 நியூட்ரான்கள்
  3. 2 புரோட்டான்கள், 2 நியூட்ரான்கள், 2 எலக்ட்ரான்கள்
  4. 2 புரோட்டான்கள், 2 எலக்ட்ரான்கள்

Answer (Detailed Solution Below)

Option 2 : 2 புரோட்டான்கள், 2 நியூட்ரான்கள்
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Detailed Solution

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கருத்து :

ஒரு அணுவின் குறிப்பில், Z X A ; z என்பது அணு எண் மற்றும் A என்பது நிறை எண்.

புரோட்டான்களின் எண்ணிக்கை Z

நியூட்ரான்களின் எண்ணிக்கை = A - Z

விளக்கம் :

ஹீலியம் அணு 2He4 ஆல் வழங்கப்படுகிறது

Z = 2 மற்றும் A = 4

புரோட்டான்களின் எண்ணிக்கை Z = 2

நியூட்ரான்களின் எண்ணிக்கை = A - Z = 2

எனவே சரியான பதில் விருப்பம் 2 ஆகும்.

அணுக்கருவில் எலக்ட்ரான் காணப்படாததால், விருப்பம் 4 தவறானது.

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