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प्रश्न
The electronic configuration of an element T is 2, 8, 8, 1.
- What is the group number of T?
- What is the period number of T?
- How many valence electrons are there in an atom of T?
- What is the valency of T?
- Is it a metal or a non-metal?
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उत्तर
- Group 1 since the valence electron is 1.
- With 4 shells T belong to period 4.
- It has one electron in the outermost orbit. So there is only one valence electron.
- T needs to lose one electron to complete its octet; hence, its valency is 1.
- Since it has one valence electron, it is a metal.
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संबंधित प्रश्न
Fill in the following blank with suitable word:
Group 1 elements are called ...............
How would the tendency to lose electrons change as we go from left to right across a period of the periodic table?
What are the advantages of the periodic table?
Which of the following are the correct characteristics of isotopes of an element?
(i) same atomic mass
(ii) same atomic number
(iii) same physical properties
(iv) same chemical properties
(a) (i), (ii) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
Name the type of elements which have outermost shell complete.
Name and state the following with reference to the elements of the first three periods of the periodic table.
A covalent compound formed by an element in period 2 and a halogen.
State the number of elements in Period 2 of the Periodic Table.
State the number of elements in Period 3 of the Periodic Table.
What are the periods in a periodic table?
Where would you locate the element with electronic configuration 2,8 in the Modern Periodic Table?
