nuclear chem
acc to my understanding X1 is alpha particle and X2 is beta- ( both correct)
EDIT: the last particle is supposed be thorium 230 not 234'
21 Replies
@Dexter
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.the problem lies with Z
acc to ans key Z is isotope of uranium but thats not definitive
x3 can be a positron making Z thorium 234 and then x4 can be 4 neutrons can be emitted to make thorium 290
you cant emit neutrons unless its a fission reaction
isnt this just decay
How would a nucleus just emit neutrons
no nuclear scientist man
@iTeachChem some help?
x1 is alpha decay
since only alpha decay can change nuclear mass
from the mass numbers we can see that 1 alpha particle (4 He 2) 2+ has been released
alpha particles are positively charged, so D is correct
x2 is a neutron turning into a proton + electron (as indicated by increase in atomic number but no change in mass number), so beta minus decay
C is correct
x4 is once again alpha decay, since the mass number changes
i.e. Z has 2 more protons than Thorium
i.e. 92 protons
A is wrong since gamma decay can't change mass or atomic number, x3 is neutron -> proton i.e. beta minus decay
B is correct since the atomic number of uranium is 92 and Z has 92 protons
(BCD)
figuring out c and d was pretty the problem lied with B
to sum it up in decay only alpha , gamma , beta+ (positron) and beta-(electrons) can be emitted
when n/p ratio >1 then beta(electron) emission occurs by breaking of neutron to proton and electron and gamma rays
when n/p < 1 then either beta+ (positron) emission occurs by breaking proton into neutron and positron with gamma rays or K-electron capture where electron and proton merge to make 1 neutron and X rays
alpha emission cant be explained
is my concept clear / precise ??
to utilize neutrons rxn must be fission
sir can u pls look into my other doubts as well
are par sir
x1 is alpha decay na
and alpha particle has a +2 positive charge
so it'll deflect towards negative plate
is there uncertainty there?
x1 alpha, x2 beta minus, x3 beta minus and x4 alpha fits
Yea bro b and c are correct :D
It’s not that direct wrt n/p ratio
Neutron–proton ratio
The neutron–proton ratio (N/Z ratio or nuclear ratio) of an atomic nucleus is the ratio of its number of neutrons to its number of protons. Among stable nuclei and naturally occurring nuclei, this ratio generally increases with increasing atomic number. This is because electrical repulsive forces between protons scale with distance differently ...
Zone of stability hai. But yea cool kinda on the right track you are.
Also all this is def not there in jee main.
Physics me shayad ho sakte hai.
Which one?
nhi mera matlab we can figure out D to be correct
X3 seems to be beta to me.
x1 is an alpha particle, positively charged, so D is correct
yes
234 Pa 91
---beta minus---> 234 Z 92 (uranium atomic number 92) --alpha decay-> 230 Th 90 checks outyep ans is BCD
karna toh adv hai
anyways
+solved @iTeachChem @hithav @Nimboi
Post locked and archived successfully!
Archived by
<@741159941934415883> (741159941934415883)
Time
<t:1732791176:R>
Solved by
<@1035556259417571408> (1035556259417571408), <@726641475080683522> (726641475080683522), <@717724055217635398> (717724055217635398)