Home
Class 12
PHYSICS
Atomic masses of two isobars .(29)^(64)C...

Atomic masses of two isobars `._(29)^(64)Cu` and `._(34)^(64)Zn` are `63.9298 u` and `63.9292 u`, respectively. It can be concluded from this data that.

A

both the isobars are stable

B

`Zn^(64)` is radioactive , decaying to `Cu^(64)` through `beta`-decay

C

`Cu^(64)`is radioactive , decaying to `Zn^(64)` through `gamma`-decay

D

`Cu^(64)`is radioactive , decaying to `Zn^(64)` through `beta`-decay

Text Solution

Verified by Experts

The correct Answer is:
d
By the conservation of charge and nucleons, only potential is feasible.
Promotional Banner

Similar Questions

Explore conceptually related problems

Masses of two isobars ._(29)Cu^(64) and ._(30)Zn^(64) are 63.9298 u and 63.9292 u , respectively. It can be concluded from these data that .

Masses of two isobars ._(29)Cu^(64) and ._(30)Zn^(64) are 63.9298 u and 63.9292 u , respectively. It can be concluded from these data that .

(a) Find the energy needed to remove a neutron from the nucleus of the calcium isotopes ._(20)^(42)Ca (b) Find the energy needed to remove a proton from this nucleus (c ) Why are these energies different ? Atomic masses of ._(20)^(41)Ca and ._(20)^(42)Ca are 40.962278 u and 41.958622 u respectively.

E_0 values of Zn^(2+), Zn , Mg^(2+), Mg and Cu^(2+), Cu are -0.76 V, -2.36 and 0.34 V respectively. (a) Which metal can be extracted even from its aqueous solutions by electrolysis ? (b) Which metal acts as best reductant ? Write reactions .

Atoms of elements A, B and C combine to form a compound in the atomic ratio of 1 : 6 : 2 . Atomic masses of A, B and C are 64, 4 and 16 respectively. What will be the maximum mass of a compound formed from 1.28 g of A, 3xx10^(23) atoms of B and 0.04 moles of C ?

For an element , if atomic number (Z) and mass number (A) are 29 and 63 respectively . Then the number of protons , neutrons and electrons respectively are :-

(a) Two stable isotope of ._3Li^6 and ._3Li^7 have respective abundances of 7.5% and 92.5% . These isotopes have masses 6.01512 and 7.01600 u respectively. Find the atomic weight of lithium. (b) Boron has two stable isotopes ._5B^(10) and ._5B^(11) . Their respective masses are 10.01294 u and 11.00931 u, and the atomic weight of boron is 10.81 u. Find the abundances of ._5B^(10) and ._5B^(11) .

(a) Two stable isotope of ._3Li^6 and ._3Li^7 have respective abundances of 7.5% and 92.5% . These isotopes have masses 6.01512 and 7.01600 u respectively. Find the atomic weight of lithium. (b) Boron has two stable isotopes ._5B^(10) and ._5B^(11) . Their respective masses are 10.01294 u and 11.00931 u, and the atomic weight of boron is 10.81 u. Find the abundances of ._5B^(10) and ._5B^(11) .

As part of his discovery of the neutron in 1932, James Chadwick determined the mass of the neutron (newly identified particle) by firing a beam of fast meutrons, all having the same speed, as two different targets and measuing the maximum recoil speeds of the target nuclei. The maximum speed arise when an elastic head-on collision occurs between a neutron and a stationary target nucleus. Represent the masses and final speeds of the two target nuclei as m_(1), v_(1), m_(2) and v_(2) and assume Newtonian mechanics applies. The neutron mass can be calculated from the equation: m_(n) = (m_(1)v_(1) - m_(2)v_(2))/(v_(2) - v_(1)) Chadwick directed a beam of neutrons on paraffin, which contains hydrogen. The maximum speed of the protons ejected was found to be 3.3 xx 10^(7) m//s . A second experiment was performed using neutrons from the same source and nitrogen nuclei as the target. The maximum recoil speed of the nitrogen nuclei was found to be 4.7 xx 10^(6) m//s . The masses of a proton and a nitrogen nucleus were taken as 1u and 14 u , respectively. What was Chadwick's value for the neutron mass?

A helium atom, a hydrogen atom and a neutron have mases of 4.003 u, 1.008 u and 1.009 u (unified atomic mass units), respectively. Assuming that hydogen atoms and neutrons can be fuse to from helium, what is the binding energy of a helium nucleus?