a) After 1600yrs - 0.5 decayed, 0.5 left After 3200 yrs - there's 0.5 left, so you need to take half of that, i.e. a further 0.25 of the initial sample would have decayed. so total decayed = 0.75, total undecayed = 0.25 After 4800 - half of the 0.25 left will decayed, i.e. a further 0.125 of initial sample will decay. so total decayed = 0.75 + 0.125 = 0.875 of initial sample = 7/8 b) 6400 yrs is a further half life (from part a). After 4800 yrs, 1/8 is left, so after another half life, 1/16 will be left
15) The half life of radium is 1600 years. The fraction of a sample of radium that would remain undecayed after 6400 years is
Answer is:
41290
Explanation:
Related Atoms and Nuclei MCQ with Answers
Answer is:
is different
Explanation:
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Answer is:
Bohr model combines classical and early quantum concepts
Explanation:
Bohr model combines classical and early quantum concepts
Answer is:
angular momentum of electron is quantized
Explanation:
angular momentum of electron is quantized is hypothesis in bohr's model
Answer is:
Standing wave is formed on a circular orbit where integral number of de Broglie wavelengths fit into the circumference of the orbit
Explanation:
Standing wave is formed on a circular orbit where integral number of de Broglie wavelengths fit into the circumference of the orbit is correct Debroglie statement