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प्रश्न
The electronic configuration of an element T is 2, 8, 8, 1.
What is the period number of T?
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उत्तर
With 4 shells T belong to period 4.
संबंधित प्रश्न
On which side of the periodic table will you find non-metals?
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)
Give the symbol and valency of the following element and radical.
Potassium
State what is meant by the term chemical formula.
State what the group number in the Modern Periodic Table signifies. Give a reason why elements in the same group, have similar valency and similar chemical properties.
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.
Which of these belong to the same period?
| Element | A | B | C |
| Atomic number | 2 | 10 | 5 |
Noble gases are placed in the ______ group in the modern periodic table.
Spot the error:
The elements of group 13 are called the carbon family.
An element with atomic number ______ will form a basic oxide.
