The Periodic Table

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bonCodigo

05:03

Hi, a quick clarification, I am not a bounty hunter. If there's a bounty, it's automatically awarded to the only/highest voted answer in SO. Am I wrong? (again nI am not after this bounty lol) chemistry.stackexchange.com/q/65472/7450

orthocresol

458

Q: How does the bounty system work?

What is a bounty? What is the "Featured" tab on the homepage? How can I search for questions that have a bounty attached? How do I start a bounty? When can I start a bounty? How long is the bounty period? How do I award a bounty? Can I award a bounty to my own answer? Can I award a bounty to an ...

see "What is automatic awarding"

bonCodigo

Along the lines.. thanks orthocresol.

orthocresol

05:19

It's darn confusing I must say. Which is why I linked a post instead of trying to explain it myself...

@M.A.R. haha well there are more important criteria to look at...

Mockingbird

05:52

Hey guys, is there a detailed explanation behind the chemistry of absorption of visible light, simipar to IR ray induced stretching and bending?

What I mean is do we know for sure or absorption of a particular wavelength occurs for a particular chemical structure?

Or Visible spectrum only responsible for vibrational mode, orbital transition of electron(molecular/atomic)?

4 hours later…

Mockingbird

10:11

Will anyone answer?

3 hours later…

Zhe

13:36

@Mockingbird My understanding is that visible band transitions are almost always electronic in nature

orthocresol

-3

A: What happens chemically to 5'-radiolabeled aqueous thyroxine (thyroid prohormone) when its I-131 undergoes beta+gamma decay?

My guess would be the following: The electron generated by the decay would most likely go either towards the O or the H. In either case, the oxygen (due to its electronegativity) will atract the electron forming an ion, and the hidrogen will be displaced. The oxygen will form a double bond and st...

Pentavalent carbon alert

Zhe

I've never thought about what happens where decay happens when the atom is in a molecule

That's a good first comment

orthocresol

There's a question on CO2 that actually has an answer.

Q: What happens to a radioactive carbon dioxide molecule when its carbon-14 atom decays?

When carbon-14 decays, the decay products are nitrogen-14 and an electron (and an electron antineutrino, but that's chemically irrelevant*): $$\ce{^14_6C -> ^14_7N + e- + \overline{v_e}}$$ Let's assume that the carbon atom in question is part of a carbon dioxide molecule in the atmosphere. What...