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Dmitri Mendeleev placed arsenic and selenium in his Periodic Table based on their chemical properties and similarities to other elements. He prioritized their behavior and valence over Atomic Mass, which led him to position them in a way that reflected their similarities with phosphorus and sulfur, respectively. This placement allowed him to maintain the periodic trends he observed, even if it meant deviating from a strict order by atomic mass. Mendeleev's decisions were guided by the idea that elements with similar properties should be grouped together.
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How did mendeleev place arsenic and selenium?
Mendeleev placed arsenic before selenium in his periodic table based on their atomic weights and chemical properties. Arsenic has a lower atomic weight and exhibits similar chemical behavior to other elements in its group, making it a better match for the position before selenium.
How did Mendeleev drcide where to place arsenic and selenium on the periodic table?
Mendeleev placed arsenic and selenium on the periodic table based on their chemical properties and atomic masses. He arranged elements by increasing atomic mass and grouped them by similar properties. By doing so, he could predict the properties of undiscovered elements and fill in gaps in the periodic table.
Who found the element arsenic?
Arsenic was discovered in 1250 by Albertus Magnus. The place of discovery is unknown. x
What place is Dmitri Mendeleev in the birth order?
Mendeleev was born in the village of Verkhnie Aremzyani, near Tobolsk in Siberia.
Why did Mendeleev place zinc in the same group as calcium?
They both have 2 valence electrons and have similar reactivity.
How did mendeleev place arsenic and selenium?
Mendeleev placed arsenic before selenium in his periodic table based on their atomic weights and chemical properties. Arsenic has a lower atomic weight and exhibits similar chemical behavior to other elements in its group, making it a better match for the position before selenium.
How did Mendeleev drcide where to place arsenic and selenium on the periodic table?
Mendeleev placed arsenic and selenium on the periodic table based on their chemical properties and atomic masses. He arranged elements by increasing atomic mass and grouped them by similar properties. By doing so, he could predict the properties of undiscovered elements and fill in gaps in the periodic table.
Where does Arsenic and Old Lace take place?
"Arsenic and ols lace" is cast in Brooklyn, NY.
Who found the element arsenic?
Arsenic was discovered in 1250 by Albertus Magnus. The place of discovery is unknown. x
What place was Dmitri Mendeleev in the birth order?
Mendeleev was born in the village of Verkhnie Aremzyani, near Tobolsk in Siberia.
What place is Dmitri Mendeleev in the birth order?
Mendeleev was born in the village of Verkhnie Aremzyani, near Tobolsk in Siberia.
Which element from Mendeleev's seventh column is now considered out of place?
In the past, manganese was erroneously located.
What is a sentence using the word baneful?
Arsenic is baneful because it doesnt have a place in the human body!
Why did Mendeleev place zinc in the same group as calcium?
They both have 2 valence electrons and have similar reactivity.
What are the limitations of Mendeleev?
At first, he couldn't find a specific place for hydrogen, and the inner transition elements were not placed correctly.
Why did Mendeleev place iodine in the same group as fluorine?
Mendeleev placed iodine in the same group as fluorine because both elements have similar chemical properties, such as forming compounds with similar stoichiometry and showing similar reactivity patterns. This classification allowed Mendeleev to identify a pattern in the properties of elements and lay the foundation for the modern periodic table.
Where did Dimitri Mendeleev go to elementary school?
Nice joke - Mendeleev - elementary school.He was born in Tobolsk in Siberia and at the age of 13 attended the Gymnasium in Tobolsk, so we can assume that earlier schooling, if he had any, also took place in Tobolsk.
