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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
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उत्तर
Decreases
संबंधित प्रश्न
Write the name and symbol of the element from the description.
The atom having the smallest size.
Write a scientific reason.
Atomic radius goes on increasing down a group.
Study the radius of the element given below and answer the following questions.
| elements | K | Na | Rb | Cs | Li |
| Atomic radius (pm) | 231 | 186 | 244 | 262 | 151 |
a) Which of the above elements have the smallest atom?
b) In which group of the modern periodic table the above element are belongs?
c) What is the periodic trend observed in the variation of atomic radii down a group?
What happens to the atomic size of elements on moving from left to right in a period?
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
Atomic size increases from left to right across a period.
Arrange the following as per the instruction given in the bracket
Na, K, Li (Increasing atomic size)
Nanometer unit is used to measure atomic radius.
Moving from left to right, the size of the atom decreases.
Arrange the following as per instruction given in the bracket.
Mg, Cl, Na, S, Si (decreasing order of atomic size)
Arrange the following in order of increasing radii:
Mg2+, Mg, Mg+
Explain your choice.
