If an atom of thorium-234 were to undergo beta emission twice, which atom would result?
Answer

Rn-226

U-234

Th-230

U-238

Question

If an atom of thorium-234 were to undergo beta emission twice, which atom would result?
Answer
		
Rn-226
		
U-234
		
Th-230
		
U-238

chmvijay · Answer

what would result by beta emission can you tell :) its atomic no increases by one or decreases by 2 ?

anonymous · Answer

In beta emission doesnt it add + 1 proton?

chmvijay · Answer

yup :)

anonymous · Answer

So Rn- 226?

chmvijay · Answer

how come Rn 226?

chmvijay · Answer

two protons are added the atomic no increases by ?

anonymous · Answer

Oops sorry, I'm number illiterate, and increase by 4?

chmvijay · Answer

one beta decay increases one proton, mean increase the atomic no of formed nucleus by one unit
now there are two beta decays
the atomic no of Th is 90 then after two decay the atomic no of daughter nucleus will be ?

chmvijay · Answer

hello ?

chmvijay · Answer

what is the answer ?

anonymous · Answer

Sorry I'm a bit confused - I'm trying to figure that out

anonymous · Answer

92? Because it increased by 2?

chmvijay · Answer

yaaa wt is element with 92 atomic no ?

anonymous · Answer

Uranium 238! Woohoo!

chmvijay · Answer

why 238 ?

chmvijay · Answer

only atomic no increased is there increase of mass no why it changed from 234 to 238 ?LOL

anonymous · Answer

oh god, I MEANT 234. i can't type anything today!

chmvijay · Answer

in alpha decay the daughter nucleus will fall 2 atomic no less and mass no by 4 unit where as in beta decay the daughter nucleus increases one atomic no but there is no increase in mass no ;)

anonymous · Answer

Thanks alot!

chmvijay · Answer

LOVE you pumpkin :) yw