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प्रश्न
Name two elements in Alkali metals.
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उत्तर
Sodium and potassium.
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संबंधित प्रश्न
Fill in the blank:
The modern periodic table consists of ……………. periods.
Why do all the elements of the same group have similar properties?
Give the group number of following elements present in periodic table
Name two elements in Alkaline earth metals.
Give the symbol and valency of the following element and radical.
Hydrogen
State whether true or false. If false, correct the statement.
Lanthanides and actinides are kept at the bottom of the periodic table because they resemble each other but they do not resemble with any other group elements.
Three elements A, B and C have 3, 4 and 2 electrons respectively in their outermost shell. Give the group number to which they belong in the Modern Periodic Table. Also, give their valencies.
An element has 2 electrons in its N shell.
State its position in periodic table.
Answer the following in respect of element \[\ce{_16^32S}\].
- Give its electronic configuration.
- To which group and period does it belon?
- What is its valency?
- Is it a metal or a non-metal?
- Is it a reducing agent or an oxidising agent?
- Give its formula with hydrogen.
Match the atomic number with the following:
A rare gas.
