PLEASE HELP!!!!!!!!!!!?
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PLEASE HELP!!!!!!!!!!!?

[From: ] [author: ] [Date: 12-01-26] [Hit: ]
--Replace the [DOT] with a .4) The radioisotope radon-222 has a half-life of 3.8 days. How much of a 73.9-g sample of radon-222 would be left after approximately 23 days?5) If the half-life of sodium-24 is 15 hours,......
1) What is the change in atomic number when an atom emits a beta particle?

A) decreases by 2
B) increases by 2
C) increases by 1

2) What symbol is used for beta radiation?

The picture is on:
yanswersquestion.tumblr [DOT] com/post/16487427664

--Replace the [DOT] with a .

3) What particle is needed to complete the following nuclear equation?

The picture is on:
yanswersquestion.tumblr [DOT] com/post/16487737746

--Replace the [DOT] with a .

4) The radioisotope radon-222 has a half-life of 3.8 days. How much of a 73.9-g sample of radon-222 would be left after approximately 23 days?

5) If the half-life of sodium-24 is 15 hours, how much remains from a 10.0-g sample after 60 hours?

-
1. A (as a beta particle has an atomic no of -1)
2. e
3. couldn't find it
4. can't rembemer how to do these :L
have fun :)
1
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