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प्रश्न
______ and ______ are called inner transition elements.
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उत्तर
Lanthanides and Actinides are called inner transition elements.
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संबंधित प्रश्न
Which of the following statement about the modern periodic table is correct?
(a) It has 18 horizontal rows known as periods.
(b) It has 7 vertical columns known as periods.
(c) It has 18 vertical columns known as groups.
(d) It has 7 horizontal rows known as groups.
Give alongside is a part of the periodic table :
As we move horizontally from left to right:
| Li | Be | B | C | N | O | F | |
| Na | Mg | Al | Si | P | S | Cl |
(i) What happens to the metallic character of the elements?
(ii) What happens to the atomic size?
What is the usual number of valence electrons in the atoms of the last element in a period?
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.
Name the type of elements which have outermost shell incomplete.
Name the type of elements which have two outermost shell incomplete.
An element E has following electronic configuration:
|
K |
L |
M |
|
2 |
8 |
6 |
(a) To which group of the periodic table does element E belong?
(b) To which period of the periodic table does element E belong?
(c) State the number of valence electrons present in element E.
(d) State the valency of the element E.
Give the symbol and valency of the following element and radical.
Bisulphite
Which of the following statements about the Modern Periodic Table is correct:
What is the general name of the last elements of the Periodic Table?
