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प्रश्न
The electronic configuration of an element T is 2, 8, 8, 1.
What is the period number of T?
उत्तर
With 4 shells T belong to period 4.
संबंधित प्रश्न
State modern periodic law.
Fill in the following blank with suitable word:
Group 1 elements are called ...............
What is the name of those elements which divide metals and non-metals in the periodic table?
(b) What is the number of elements is 3rd period, the modern periodic table?
Fill in the blank:
The horizontal rows in the periodic table are called _____________.
Answer the following question.
Define the atomic size. Give its unit of measurement. In the modern periodic table what trend is observed in the atomic radius in a group and a period and why is it so?
Give the chemical formula of magnesium nitrate
An element which is an essential constituent of all organic compounds belongs to
Which one of the following elements exhibit maximum number of valence electrons?
- Write the electronic configuration of element X, given by its symbol as under: \[\ce{^40_20 X}\]
- Determine its position in the modem periodic table.
- What is the nature of its oxide?
- Name one other element of its group.
