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The inert gases. They become more inert as you go up the column, so it's relatively easy to make compounds of xenon and krypton; that was done back in 1962. Forget about radon; it's radioactive with a half-life of less than 4 days. Argon compounds have been made, but they decompose at temperatures higher than 40K. Last I heard, nobody's ever made compounds of helium or neon.

2007-03-28 12:09:32 · answer #1 · answered by zee_prime 6 · 0 0

Group VIIIA, the noble gases (far right of the table). They have a full valence shell (2 electrons for helium, 8 for all the rest), so they don't want to react to give up or get any electrons.

2007-03-28 12:02:27 · answer #2 · answered by Anonymous · 1 0

The furthest right column on the periodic table, the noble gases. I've heard they were called noble because it's so difficult to get them to mix with other elements, the way the nobility stereotypically don't like to mix with the common folk.

2007-03-28 12:02:55 · answer #3 · answered by wtf 2 · 0 0

Noble Gases, rightmost column of the periodic table. Group 8A.

2007-03-28 12:02:47 · answer #4 · answered by dac2chari 3 · 0 0

The noble gases because they have their valence electrons filled.

2007-03-28 12:02:30 · answer #5 · answered by caitlin_batts 1 · 0 0

Last group, the group of helium.

2007-03-28 12:02:29 · answer #6 · answered by Wonder 2 · 0 0

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