An unstable isotope of Rhenium Re-191, has a half life of 9.8 minutes and is a beta producer.?

Question

what is the other product of the reaction?
A. Os-161
B. Pt-192
C. W-190
D. Os-190
E.W-191

please explain

Answer 1

I will write out the nuclear decay eqation


191 Re + ---------> 191 Os + 0 Beta + energy
75 76 -1

In beta decay a neutron decay to form a proton (so the atomic number does not decrease) and an electron. The element it convert to has no relative mass change as a neutron is converted to a proton, which in term increases the atomic number, so that answer is A,

Answer 2

First of all, this is a chemistry question.

Ok, the half-life has very little to do with the problem, so we can ignore that piece of information.

Write out the nuclear equation

Re-191 = X-Y + e
191 75 Re = x y Aa + 0 -1
Add a 0 1 to both sides of the equation to get
191 76 Os = x y Aa
So "Aa" is Os
And x is 191

So the anwer is Os 191

The key point in this explaination is that beta decay = increase in atomic number, but same atomic mass

Answer 3

Answer E

Explanation: When a nucleus emits a beta ray, its mass does not change . so ,the mass of the product is 191 and only E fulfills this requirement

You can also say that it is a beta+ emitter since the atomic number of the product is one less

Answer 4

try asking in the chemistry section ... they'll help you easier/more