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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.
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Why were some of the elements not predicted?
Some elements were not predicted because they were unstable and quickly decayed into other elements, making them difficult to observe or study. Additionally, some elements exist in very small quantities or under extreme conditions that were not present when the periodic table was initially created.
What kinds of predictions did Mendeleev make using his table?
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.
What did the gaps on Mendeleev's tabel represent?
He predicted that elements with the predicted properties would be discovered to fill in these gaps.
Did Mendeleev fix the problem of predicted where new elements would fit into the periodic table?
Yes, Dimitri Mendeleev did (accurately, I might add) predict where elements would appear in his table. He also correctly predicted some of the missing elements' properties, based on where they were positioned in his table.
Which were the elements predicted by Mendeleev and what name did he give them?
Mendeleev predicted the existence of elements like germanium, gallium, and scandium. He named them "eka-silicon," "eka-aluminum," and "eka-boron," respectively, based on their predicted properties in relation to the known elements at that time.
What elements properties can be predicted from?
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.
What are some of the uses of the periodic table of elements?
- 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
Why were some of the elements not predicted?
Some elements were not predicted because they were unstable and quickly decayed into other elements, making them difficult to observe or study. Additionally, some elements exist in very small quantities or under extreme conditions that were not present when the periodic table was initially created.
What kinds of predictions did Mendeleev make using his table?
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.
What did the gaps on Mendeleev's tabel represent?
He predicted that elements with the predicted properties would be discovered to fill in these gaps.
Which property of bromine could you not predict based on the fact that it is a nonmetal in halogen family?
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.
What properties can be predicted by the elements place on the periodic table?
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Who predicted that the existence of several missing elements?
You think probable to Dimitri Mendeleev.
Did Mendeleev fix the problem of predicted where new elements would fit into the periodic table?
Yes, Dimitri Mendeleev did (accurately, I might add) predict where elements would appear in his table. He also correctly predicted some of the missing elements' properties, based on where they were positioned in his table.
Which were the elements predicted by Mendeleev and what name did he give them?
Mendeleev predicted the existence of elements like germanium, gallium, and scandium. He named them "eka-silicon," "eka-aluminum," and "eka-boron," respectively, based on their predicted properties in relation to the known elements at that time.
Mendeleev left spaces in his periodic table and predicted several elements and they're?
Yes, Mendeleev left gaps in his periodic table to accommodate elements that had not yet been discovered. Some of the elements he predicted include germanium, gallium, and scandium. These predictions were largely based on the properties of neighboring elements in the table.
Did Mendeleev leave gaps in the table for undiscovered elements?
Yes, Mendeleev left gaps in his periodic table for undiscovered elements. He predicted the properties of these missing elements based on the trends in the known elements and their positions in the table. This helped in the discovery of elements such as gallium, scandium, and germanium.
