OnlineCBT Logo OnlineCBT
⚲
English
OnlineCBT Logo OnlineCBT
⚲

Chemistry · Structure of atom

हिन्दी

In Rutherford's \( \alpha \)-particle scattering experiment, what fraction of \( \alpha \)-particles were observed to bounce back, i.e., get deflected by nearly \( 180^\circ \)?

  1. About 1 in 100
  2. About 1 in 20,000
  3. About 1 in 1,000
  4. None of the \( \alpha \)-particles

Correct answer · Option 2

About 1 in 20,000

Explanation

Very few \( \alpha \)-particles (\( \sim 1 \) in 20,000) bounced back with a deflection of nearly \( 180^\circ \).

Related questions

Consider the following statements about quantum rules and orbitals:\n(A) The principal quantum number \( n \) defines the main shell and size of the orbital.\n(B) For a given value of \( n \), there are \( n \) allowed values of \( l \).\n(C) The number of \( m_l \) values for a given \( l \) is \( 2l + 1 \).\n(D) The total number of electrons in a given subshell is \( 2l + 1 \). \nWhich of the above statements are correct?→Given below are two statements:\n Statement I: The 4s orbital has a lower \( (n + l) \) value than the 3d orbital, hence 4s fills before 3d.\n Statement II: Valence electrons are those electrons added to the electronic shell with the lowest principal quantum number. \nIn the light of the above statements, choose the most appropriate answer from the options given below:→If the radius of a nucleus of a heavy atom \( A \) is estimated, what is the approximate ratio of the nuclear radius to the radius of its atom if the atomic radius is of the order of \( 10^{-10}\text{ m} \) and nuclear radius is \( 10^{-14}\text{ m} \)?→What is the energy associated with the first orbit in the hydrogen atom given by \( E_1 = -2.18 \times 10^{-18} \text{ J atom}^{-1} \)? What is the energy associated with the fifth orbit?→
ऑनलाइन कंप्यूटर आधारित परीक्षा

हमारा मिशन है – "विद्यार्थियों को शिक्षित करना और उन्हें प्रतिस्पर्धी परीक्षाओं की तैयारी में उनकी पूर्ण क्षमता के साथ उत्कृष्टता प्राप्त करने में सहायता करना। साथ ही उनमें अच्छे संस्कारों का संचार करना और उनके व्यक्तित्व का विकास करना।"

उपयोगी लिंक
महत्वपूर्ण पेज
कोर्सेज और अभ्यास
संपर्क करें
पता

प्लॉट नं. 10, धोलीगुमटी, पंडितपुरा रोड, बंदीकुई, दौसा (राजस्थान) – 303313

संपर्क करें

+91 7877547686

 ई-मेल

onlinecbtportal@gmail.com

 हेल्पलाइन नंबर

+91 7877547686
साझा करें
डाउनलोड करने के लिए क्लिक करें
Get it on Google Play

ऐप डाउनलोड करने
के लिए Google Play पर
उपलब्ध है

उपयोग की शर्तें | गोपनीयता नीति | कुकी नीति | अस्वीकरण | संपादकीय नीति | तथ्य जांच | सुधार | DMCA | विज्ञापन विकल्प

Copyright © 2026 - OnlineCBT.in. All Rights Reserved.

WhatsApp Chat