Question

Element X has 3 isotopes, with the masses and percent abundances listed below. Identify element X using this information.

X-16 15.995amu 99.762%

Answer 1

I've been having a really hard time with isotopes but electron configuration is easy

Answer 2

It sounds like Oxygen, if i'm not mistaken.
Yeah, 3 stable isotopes, 15.995amu. This is Oxygen.

Answer 3

How did you solve it?

Answer 4

Easy. The Atomic Mass (amu) is just the number of protons and neutrons in an element. All you have to do is compare that to the periodic table of elements, and you don't actually have to solve it, LOL. However, on the periodic table. Of course it will be rounded up, so Oxygen is shown with 16.00 AMU

Answer 5

Hmm okay

Answer 6

I have the Periodic Table in my binder, because reasons. You should find one. They are very useful.

Answer 7

You could use this website here:
https://www.lenntech.com/periodic/mass/atomic-mass.htm
This isn't rounding them so it should be helpful.

Answer 8

So X-17 16.999amu 0.038% would be oxygen as well?

Answer 9

Oof sorry. My chromebook just crashed. That's the third time this morning.

Answer 10

Lol it's okay

Answer 11

Chromebooks are the big trash

Answer 12

I shot your chromebook

Answer 13

Yes this would also be oxygen. (Oxygen 16), the difference is their neutron and proton weights. and yes, it has done nothing but malfunction for the last month. It's quite annoying.

Answer 14

So thats how I would solve those? Just by looking at the periodic table and seeing which element is closest to it?

Answer 15

Nothing is worse than topping off a 5 paragraph essay on why the cold war was unneccassary than having your Chromebook shut off, ask if you'd like to restore the pages, then shut off again when you say select yes.

Answer 16

unnecessary*

Answer 17

5 paragraph essay?
OOF

Answer 18

I doubt you could find them on the periodic table. To solve you calculate their stable isotopes(I'm gonna assume you don't know how to do so https://courses.lumenlearning.com/boundless-chemistry/chapter/atomic-mass/ this explains better than I can, apparently.) And this one is oxygen 17, apologies. You could also look at the part where it says what they are "x-17" and "x-16".

Answer 19

Ok thanks Saiyan

Answer 20

You're welcome.