WebIt is placed below radon in group 0. Assuming that it is a gas at room temperature, predict its density and explain your answer. Reveal answer Chemical properties The noble gases are all inert -... WebHelium, neon and argon? Lithium, calcium and sulfur? Lithium, boron and ... they are very unreactive. The elements in group I have similar chemical properties because? ... A substance made up of two or more atoms chemically combined.

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WebHelium is so light that it can escape the pull of the Earth's gravitational field and leave our planet forever. This is the fate of the helium in our balloons. Whereas it may be possible … WebHelium atom have a full outer electron shell. Elements are chemically reactive only if they have an unfilled out shell. The proton number of helium is two, so a helium atom has two … scandinavian ceramic artists

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Web14 jan. 2024 · Inactive gases are gases that are chemically unreactive. A look at the periodic table shows that these gases are (in order of increasing atomic number) Helium, Neon, Argon, Krypton, Xenon and Radon. They are all grouped together in one vertical column because they tend to share the same chemical properties. Chemical properties … Web23 mei 2006 · For helium, that limit is just two electrons. These electron arrangements are especially stable, leaving the noble gases without a tendency to gain or loose electrons. This led chemists to think of them as totally unreactive. A few chemists questioned the absolute inertness of the noble gases. WebSolution Helium atom have a full outer electron shell. Elements are chemically reactive only if they have an unfilled out shell. The proton number of helium is two, so a helium atom has two electrons, which exist in the 1s shell. It doesn't gain or lose electrons to fill it's shell and is unreactive. Suggest Corrections 1 Similar questions scandinavian ceiling light