Nucle
Madhya Pradesh Board · Class 12 · Physics
Flashcards for Nucle — Madhya Pradesh Board Class 12 Physics. Quick Q&A cards covering key concepts, definitions, and formulas.
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Answer
परमाणु द्रव्यमान इकाई को 1 12C परमाणु के द्रव्यमान के 1/12 के रूप में परिभाषित किया जाता है. सूत्र: 1u = एक 12C परमाणु का द्रव्यमान / 12 = 1.992647×10^-26 kg / 12 = 1.660539×10^-27 kg. अर्थ: u परमाण्व…
State the atomic mass unit and its value in kilograms.
Answer
Atomic mass unit is defined as 1/12 of the mass of one 12C atom. Formula: 1u = mass of one 12C atom / 12 = 1.992647×10^-26 kg / 12 = 1.660539×10^-27 kg. Meaning: u is the unit used for atomic and nucl…
Why are atomic mass units used instead of kilograms for nuclei?
Answer
Nuclear masses are extremely small in kilograms, so kilograms are not convenient. A carbon atom has mass 1.992647×10^-26 kg, while a proton has mass 1.67262×10^-27 kg. Using u makes comparisons and ca…
नाभिकों के लिए किलोग्राम के बजाय परमाणु द्रव्यमान इकाइयों का उपयोग क्यों किया जाता है?
Answer
नाभिकीय द्रव्यमान किलोग्राम में अत्यंत छोटे होते हैं, इसलिए किलोग्राम सुविधाजनक नहीं है. एक कार्बन परमाणु का द्रव्यमान 1.992647×10^-26 kg है, जबकि एक प्रोटॉन का द्रव्यमान 1.67262×10^-27 kg है. u का उप…
समस्थानिक क्या होता है?
Answer
समस्थानिक किसी एक ही तत्व के वे नाभिक होते हैं जिनका परमाणु क्रमांक Z समान होता है, लेकिन द्रव्यमान संख्या A भिन्न होती है क्योंकि उनके न्यूट्रॉनों की संख्या अलग होती है. उदाहरण: ड्यूटेरियम 2_1H और ट्…
What is an isotope?
Answer
Isotopes are nuclides of the same element having the same atomic number Z but different mass number A because they have different numbers of neutrons. Example: deuterium 2_1H and tritium 3_1H are isot…
A chlorine atom has isotopes of masses 34.98 u and 36.98 u with abundances 75.4% and 24.6%. Find its average atomic mass.
Answer
Given: m1 = 34.98 u, m2 = 36.98 u Abundances: 75.4% and 24.6% Formula: average mass = (75.4×34.98 + 24.6×36.98)/100 Step 1: 75.4×34.98 = 2637.492 Step 2: 24.6×36.98 = 909.708 Step 3: sum = 3547.200 St…
एक क्लोरीन परमाणु के समस्थानिकों के द्रव्यमान 34.98 u और 36.98 u हैं तथा प्रचुरताएँ 75.4% और 24.6% हैं। उसका औसत परमाणु द्रव्यमान ज्ञात कीजिए।
Answer
दिया गया: m1 = 34.98 u, m2 = 36.98 u प्रचुरताएँ: 75.4% और 24.6% सूत्र: औसत द्रव्यमान = (75.4×34.98 + 24.6×36.98)/100 चरण 1: 75.4×34.98 = 2637.492 चरण 2: 24.6×36.98 = 909.708 चरण 3: योग = 3547.200 चरण …
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