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प्रश्न
The changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer.
The atomic size:
विकल्प
Decreases
Increases
Remains the same
Sometimes increases and sometimes decreases
उत्तर
Decreases
APPEARS IN
संबंधित प्रश्न
Arrange the following in order of increasing radii:
CI- , CI
Give scientific reasons for the following:
Atomic radius goes on decreasing while going from left to right in a period.
Supply the missing word from those in the brackets:
If an element has seven electrons in its outermost shell then it is likely to have the ______ (largest/ smallest) atomic size among all the elements in the same period.
The size of an atom is indicated by its _______.
Atomic radius is expressed in the unit _______.
While going from top to bottom in a group the atomic radius _______.
Nanometer unit is used to measure atomic radius.
Some elements and their atomic radii are given here. Arrange them in decreasing order of their atomic radii. Identify which of the above elements is the biggest atom and which is smallest?
| Element | K | Na | Rb | Cs | Li |
| Atomic radius (pm) | 231 | 186 | 244 | 262 | 151 |
Arrange the following in order of increasing radii:
Cl−, Cl
Explain your choice.
In Period 3 of the Periodic Table, element B is placed to the left of element A. On the basis of this information, choose the correct word from the option to complete the following statement:
The element A would have ______ atomic size than B.
