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प्रश्न
_______ is the distance between the nucleus of the atom and its outermost shell.
विकल्प
Atomic radius
Atomic diameter
atomic mass
atomic size
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उत्तर
Atomic radius is the distance between the nucleus of the atom and its outermost shell.
Explanation:
The atomic radius is defined as the distance between the center of the nucleus and the outermost shell containing electrons in an atom. It is the standard measure used to describe the size of an atom.
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संबंधित प्रश्न
Arrange the following as per the instruction given in the brackets:
Na, K, Li (Increasing atomic size)
Answer the following in respect of element `31/15 P `
Is it a reducing agent or oxidizing agent?
Arrange the elements of second and third periods in increasing order of their atomic size (excluding noble gases).
Size of atom progressively becomes smaller when we move from sodium (Na) to chlorine (CI) in the third period of the periodic table?
Fill in the blank:
On moving across a period from right to left in the periodic table, the atomic size of the atom ___________.
Arrange the following in order of increasing radii:
CI- , CI
Write the name and symbol of the element from the description.
The atom having the smallest atomic mass.
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?
Among the elements of the second period, Li to Ne, pick out the element with the largest atomic size
What happens to the atomic size of elements on moving from left to right in a period?
The following questions refer to the Periodic Table.
What happens to the atomic size of elements moving from top to bottom of a group?
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 ______.
While going from top to bottom in a group the atomic radius ______.
Write information about the given atomic numbers in the table.
| Atomic Number | Electronic configuration | Group | Period | Element |
| 10 | ||||
| 20 | ||||
| 7 |
Which of the following are the characteristics of isotopes of an element?
- Isotopes of an element have same atomic masses
- Isotopes of an element have same atomic number
- Isotopes of an element show same physical properties
- Isotopes of an element show same chemical properties
An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a divalent halide.
- Where in the periodic table are elements X and Y placed?
- Classify X and Y as metal (s), non-metal (s) or metalloid (s)
- What will be the nature of oxide of element Y? Identify the nature of bonding in the compound formed
- Draw the electron dot structure of the divalent halide
Arrange the following in order of increasing radii:
Cl−, Cl
Explain your choice.
Arrange the following in order of increasing radii:
N, O, P
Explain your choice.
