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प्रश्न
By considering their position in the Periodic Table, which one of the following elements would you expect to have maximum metallic characteristic?
विकल्प
Ga
Ge
As
Se
Be
उत्तर
Be
Explanation:
Since Be lies to the extreme left hand side of the periodic table, Be is the most metallic among the given elements.
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संबंधित प्रश्न
State whether the following statement is true of false:
According to Mendeleev's periodic law, the properties of elements are a periodic function of their atomic numbers.
(a) Write its electronic configuration and determine its valency.
(b) Is it more reactive or less reactive than Ca (atomic number 20)? Justify your answer giving reason.
(c) Is it a metal or a non-metal?
(d) Write the formula of its oxide.
Why did Mendeleev's leave some gaps in his periodic table os elements? Explain your answer with an example.
Which two elements show an ambiguity regarding their sequence in Mendeleev’s periodic table?
Write scientific reason.
Mendeleev kept vacant places in the periodic table.
State Mendeleev’s Periodic Law.
The properties of eka-aluminum predicted by Mendeleev are the same as the properties of a later discovered elements: ______
Eka-aluminium and Eka-silicon are known as ______
In Mendeléev’s Periodic Table the elements were arranged in the increasing order of their atomic masses. However, cobalt with atomic mass of 58.93 amu was placed before nickel having an atomic mass of 58.71 amu. Give reason for the same.
Give an account of the process adopted by Mendeléev for the classification of elements. How did he arrive at “Periodic Law”?
