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Question:

Chemistry Homework help please!?

1What noble gas has the same electron configuration as each of the ions in the following compounds? (Select all that apply.)aluminum bromide.i put argon for aluminum and krypton for bromidebut it was wrong.2For each of the following groups, place the atoms and/or ions in order of decreasing size(Use the appropriate lt;, , or gt; symbol to separate substances in the list.) (d) La3+, Eu3+, Gd3+, Yb3+I put : Yb3+ gt; Gd3+ gt; Eu3+ gt; La3+ but its wrong for some reasonThanks for the help! :)

Answer:

In two words, You can't! Of course, if you can keep it far enough away from the detector so it's out of range for the detector, but I'm sure you know thatYou don't state the conditions and circumstances of your questionAre you talking about something you have to walk through like airport security, or walking down the street with a metal bag, and from what distance to the detector? If you are trying to use it to hide something from a store security gate, forget it! A detector will sense a block of metal before it will sense a small piece of thin aluminum foil, but either way, if it's close enough, it will sense it no matter the size or thickness of the metal.
Make a portable oscillator generates the same frequency like the metal detector doesIt will fool the detector.
Ask the FBI when they arriveSorry I couldn't resist.
Heyy Im in ur Chemistry Class lOl umm, For Aluminum Bromide it would be AlBr3 Al3+ takes away 3 electrons so it goes to [Ne] The bromide has a -1 charge so it will gain an electron and become [Kr] As for the second one, I did the same thing and also got it wrong (

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