jee-advanced 2012 Q37

jee-advanced · India · paper1 Not Maths

37. The periodic table consists of 18 groups. An isotope of copper, on bombardment with protons, undergoes a nuclear reaction yielding element $\mathbf { X }$ as shown below. To which group, element X belongs in the periodic table?
$${ } _ { 29 } ^ { 63 } \mathrm { Cu } + { } _ { 1 } ^ { 1 } \mathrm { H } \rightarrow 6 { } _ { 0 } ^ { 1 } \mathrm { n } + \alpha + 2 { } _ { 1 } ^ { 1 } \mathrm { H } + \mathrm { X }$$
ANSWER : 8

The substituents $\mathbf { R } _ { \mathbf { 1 } }$ and $\mathbf { R } _ { \mathbf { 2 } }$ for nine peptides are listed in the table given below. How many of these peptides are positively charged at $\mathrm { pH } = 7.0$ ?

37. The periodic table consists of 18 groups. An isotope of copper, on bombardment with protons, undergoes a nuclear reaction yielding element $\mathbf { X }$ as shown below. To which group, element X belongs in the periodic table?

$${ } _ { 29 } ^ { 63 } \mathrm { Cu } + { } _ { 1 } ^ { 1 } \mathrm { H } \rightarrow 6 { } _ { 0 } ^ { 1 } \mathrm { n } + \alpha + 2 { } _ { 1 } ^ { 1 } \mathrm { H } + \mathrm { X }$$

ANSWER : 8\\

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