The Periodic Table (see link) gave great insight into the chemical properties of all the elements ... for it turns out that there is a pattern to it all.
For predicting its chemical reactivity, generally you look at where it lies on the Periodic Table, which groups it with metals, semimetals, or nonmentals. Metals combine with nonmetals to form ionic compounds; nonmetals also combine with other nonmetals to form covalent compounds; and metals combine with other metals to form metal alloys (semimetals have intermediate properties). The element's location on the periodic table also defines its specific valence electron structure, and since atoms tend to react so that they have a full octet of valence electrons this will predict the specifics of its bonding behavior. For example, a metal that has only two valence electrons (like nickel) will tend to create a (+2) cation. A nonmetal that has four valence electrons (like carbon) will tend to form four (covalent) bonds.
The periodic table (see link) gave great insight into the chemical properties of all the elements ... for it turns out that there is a pattern to it all.
For predicting its chemical reactivity, generally you look at where it lies on the periodic table, which groups it with metals, semimetals, or nonmentals. Metals combine with nonmetals to form ionic compounds; nonmetals also combine with other nonmetals to form covalent compounds; and metals combine with other metals to form metal alloys (semimetals have intermediate properties). The element's location on the periodic table also defines its specific valence electron structure, and since atoms tend to react so that they have a full octet of valence electrons this will predict the specifics of its bonding behavior. For example, a metal that has only two valence electrons (like nickel) will tend to create a (+2) cation. A nonmetal that has four valence electrons (like carbon) will tend to form four (covalent) bonds.
Stratification has three elements. These three elements are property, power, and prestige. It can be predicted what part a person plays in a social hierarchy based on whether they have these elements and how they portray them.
After Mendeleev all natural elements were predicted.
By placing the elements in order of their Atomic Mass then grouping them based on similar chemical properties, Mendeleev recognized that there were gaps in the pattern he made where elements should be. He predicted there were some elements yet to be discovered and predicted their chemical properties. The elements he predicted were later discovered and named germanium, gallium, and scandium.
He predicted that elements with the predicted properties would be discovered to fill in these gaps.
The usefulness of Mendeleev's periodic table was confirmed by the discovery of elements with predicted properties.
An elements property can be best predicted from the group it is in the Periodic Table. Groups (the columns of the tables) of elements have similar properties due to their similar electron configuration of the valence shell.
Stratification has three elements. These three elements are property, power, and prestige. It can be predicted what part a person plays in a social hierarchy based on whether they have these elements and how they portray them.
After Mendeleev all natural elements were predicted.
- allowed rational ordering of chemical elements- predicted the properties of unknown elements- the chemical behavior of chemical elements can be predicted- the atomic radius can be predicted- the melting point can be predictedand more
By placing the elements in order of their Atomic Mass then grouping them based on similar chemical properties, Mendeleev recognized that there were gaps in the pattern he made where elements should be. He predicted there were some elements yet to be discovered and predicted their chemical properties. The elements he predicted were later discovered and named germanium, gallium, and scandium.
He predicted that elements with the predicted properties would be discovered to fill in these gaps.
There are many elements among the transitional elements which has the electron configuration differed than predicted. Such element with the lowest atomic number is chromium.
Mendeleev predicted that gallium will be a metal.
Bromine is a liquid element. This property cannot be entirely predicted due to its placement on the Periodic Table. The most obvious property that can be predicted is that it is a non metal. But liquidity most certainly is the more difficult of the propertys to predict.
The usefulness of Mendeleev's periodic table was confirmed by the discovery of elements with predicted properties.
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Atomic numbers.