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प्रश्न
What are the periods in a periodic table?
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उत्तर
“Horizontal rows from left to right in a periodic table are called periods.”
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संबंधित प्रश्न
State whether the following statement is true or false:
On going down in a group of the periodic table, the number of valence electrons increases.
What is a period in a periodic table?
In the modern Periodic Table, why does cobalt with higher atomic mass of 58.93 appear before nickel having lower atomic mass of 58.71?
Name the type of elements which have outermost shell incomplete.
Name the cation and the anion in the salt – calcium sulphate
Give the chemical formula of carbonic acid
Compare Modern Periodic Law with Mendeleev's Periodic Law.
An X element with atomic number 11 and Y element with atomic number 13 belongs to the third period in the modern periodic table. With this information, give the answers of the below questions.
- Which element has more metallic character from these two elements?
- What is the valency of each X and Y elements?
- Atom size of Y element is smaller than atom size of X element. Explain.
______ and ______ are called inner transition elements.
Where would you locate the element with electronic configuration 2,8 in the Modern Periodic Table?
