Nuclear reaction for the synthesis of bohrium is to be stated. Its half life is given. If 199 atoms of bohriumB 267 could be synthesized, time elapsed before only 11 atoms of Bohrium- 267 remain is to be stated. Expected electron configuration of elemental bohrium is to be stated. Concept introduction: In radioactive decay, the decomposition of a parent nuclide takes place and a new daughter nuclide is formed. Decay constant is the quantity that expresses the rate of decrease of number of atoms of a radioactive element per second. Half life of radioactive sample is defined as the time required for the number of nuclides to reach half of the original value. To determine: The nuclear reaction for the synthesis of bohrium, the time elapsed and the electronic configuration of Bohrium- 267 .

Question

1,4-Dimethyl-1,3-cyclohexadiene can undergo 1,2- or 1,4-addition with hydrogen halides. (a) 1,2-Addition i. Draw the carbocation intermediate(s) formed during the 1,2-addition of hydrobromic acid to 1,4-dimethyl-1,3-cyclohexadiene. ii. What is the major 1,2-addition product formed during the reaction in (i)? (b) 1,4-Addition i. Draw the carbocation intermediate(s) formed during the 1,4-addition of hydrobromic acid to 1,4-dimethyl-1,3-cyclohexadiene. ii. What is the major 1,4-addition product formed from the reaction in (i)? (c) What is the kinetic product from the reaction of one mole of hydrobromic acid with 1,4-dimethyl-1,3-cyclohexadiene? Explain your reasoning. (d) What is the thermodynamic product from the reaction of one mole of hydrobro-mic acid with 1,4-dimethyl-1,3-cyclohexadiene? Explain your reasoning. (e) What major product will result when 1,4-dimethyl-1,3-cyclohexadiene is treated with one mole of hydrobromic acid at - 78 deg * C ? Explain your reasoning.

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Question

Chapter 19, Problem 95IP

Interpretation Introduction

Interpretation: Nuclear reaction for the synthesis of bohrium is to be stated. Its half life is given. If 199 atoms of bohriumB 267 could be synthesized, time elapsed before only 11 atoms of Bohrium- 267 remain is to be stated. Expected electron configuration of elemental bohrium is to be stated.

Concept introduction: In radioactive decay, the decomposition of a parent nuclide takes place and a new daughter nuclide is formed.

Decay constant is the quantity that expresses the rate of decrease of number of atoms of a radioactive element per second.

Half life of radioactive sample is defined as the time required for the number of nuclides to reach half of the original value.

To determine: The nuclear reaction for the synthesis of bohrium, the time elapsed and the electronic configuration of Bohrium- 267 .

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1,4-Dimethyl-1,3-cyclohexadiene can undergo 1,2- or 1,4-addition with hydrogen halides. (a) 1,2-Addition i. Draw the carbocation intermediate(s) formed during the 1,2-addition of hydrobromic acid to 1,4-dimethyl-1,3-cyclohexadiene. ii. What is the major 1,2-addition product formed during the reaction in (i)? (b) 1,4-Addition i. Draw the carbocation intermediate(s) formed during the 1,4-addition of hydrobromic acid to 1,4-dimethyl-1,3-cyclohexadiene. ii. What is the major 1,4-addition product formed from the reaction in (i)? (c) What is the kinetic product from the reaction of one mole of hydrobromic acid with 1,4-dimethyl-1,3-cyclohexadiene? Explain your reasoning. (d) What is the thermodynamic product from the reaction of one mole of hydrobro-mic acid with 1,4-dimethyl-1,3-cyclohexadiene? Explain your reasoning. (e) What major product will result when 1,4-dimethyl-1,3-cyclohexadiene is treated with one mole of hydrobromic acid at - 78 deg * C ? Explain your reasoning.

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