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प्रश्न
Fill in the blank in the following statement:
The tendency to gain an electron ............... on moving down in a group of the periodic table.
उत्तर
The tendency to gain an electron decreases on moving down in a group of the periodic table.
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संबंधित प्रश्न
Which element has the electronic configuration 2, 8, 2?
In which part of a group would you separately expect the elements to have the greatest metallic character
The atomic numbers of three elements A, B and C are given below:
| Element | Atomic number |
| A | 5 |
| B | 7 |
| C | 10 |
(i) Which element belongs to group 18?
(ii) Which element belongs to group 15?
(iii) Which element belongs to group 13?
(iv) To which period/periods do these elements belong?
What do you understand by periodicity?
How do the following change on moving from left to right in a period of the periodic table?
Give examples in support of your answer.
Chemical reactivity of elements ?
What is the common feature of the electronic configuration of the elements at the end of period 2, and period 3?
Choose the most appropriate answer from the following list of oxides which fit the description.
An oxide which dissolves in water forming an acid.
The elements of one short period of the periodic table are given below in order from left to right:
| Li | Be | B | C | O | F | Ne |
To which period do these elements belong?
Write the electronic configuration of two elements A and B whose atomic numbers are 20 and 17 respectively. Write the molecular formula of the compound formed when element A reacts with element B. State whether this compound is acidic, basic or neutral. Give a reason to justify your answer.
State the property trends in general of elements on moving down in a group of the periodic table.
