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13 Cards in this Set
- Front
- Back
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family |
k |
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period |
k |
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density |
The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume. The symbol most often used for density is ρ
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group |
In mathematics, a group is an algebraic structure consisting of a set of elements together with an operation that combines any two elements to form a third element. |
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nonmetal |
In chemistry, a nonmetal (or non-metal) is a chemical element that mostly lacks metallic attributes. |
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reactivity |
Reactivity is the tendency of a substance to undergo chemical reaction, either by itself or with other materials, and to release energy. |
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metal |
Definition of Ligand. A ligand is an ion or molecule that binds to a central metal atom to form a complex (alternatively known as a coordination entity). |
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noble gas |
any of the gaseous elements helium, neon, argon, krypton, xenon, and radon, occupying Group 0 (18) of the periodic table. They were long believed to be totally unreactive but compounds of xenon, krypton, and radon are now known. |
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metalloid |
A metalloid is a chemical element with properties in between, or that are a mixture of, those of metals and nonmetals. There is no standard definition of ametalloid, nor is there complete agreement as to which elements are appropriately classified as such. |
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chemical symbol |
In chemistry, a symbol is a code for a chemicalelement. |
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atomic mass |
the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes. |
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atomic number |
Atomic number is the number of protons, and therefore also the total positive charge, in theatomic nucleus. The Rutherford–Bohr model of the hydrogen atom (Z = 1) or a hydrogen-like ion (Z > 1). |
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dmitri mendeleev |
Dmitri Ivanovich Mendeleev was a Russian chemist and inventor. He formulated the Periodic Law, created his own version of the periodic table of elements.
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