The correct answer is: They are highly reactive.
Alkali metals, such as lithium, sodium, and potassium, belong to Group 1 of the periodic table and are highly reactive due to their low ionization energies. This means they readily give away their outermost electron to form positive ions. As a result, they readily react with oxygen, water, and other elements in nature. Therefore, it is unlikely to find pure alkali metals in their elemental form in nature.
Why is it unlikely to find pure alkali metals in nature?
They have low reactivity.
They are highly reactive.
They are made in the laboratory.
They are so rare.
3 answers
The discovery of what element showed the usefulness of Mendeleev’s periodic table ?
germanium
gallium
scandium
aluminum
germanium
gallium
scandium
aluminum
The correct answer is: germanium.
The discovery of germanium in 1886 by Clemens Winkler demonstrated the usefulness of Dmitri Mendeleev's periodic table. Mendeleev had left gaps in his table for elements that were yet to be discovered, and the properties and predicted position of germanium matched those gaps. This discovery validated the predictive power of the periodic table and its ability to accurately organize elements based on their properties and atomic structure.
The discovery of germanium in 1886 by Clemens Winkler demonstrated the usefulness of Dmitri Mendeleev's periodic table. Mendeleev had left gaps in his table for elements that were yet to be discovered, and the properties and predicted position of germanium matched those gaps. This discovery validated the predictive power of the periodic table and its ability to accurately organize elements based on their properties and atomic structure.