Advertisements
Advertisements
प्रश्न
Write scientific reason.
Atomic radius goes on increasing down a group.
Advertisements
उत्तर
Atomic radius increases as we move from top to bottom in a group of the periodic table because a new shell of electrons is added to the atoms at every step. As the number of shells in the atoms increases gradually due to which the size of atoms also increases. As the size of the atoms increases which leads to an increase in the atomic radius of an atom.
APPEARS IN
संबंधित प्रश्न
Answer the following in respect of element `31/15 P `
Give its formula with chlorine?
Arrange the elements of second and third periods in increasing order of their atomic size (excluding noble gases).
Which is greater in size an atom or an anion?
Fill in the blanks.
Size of the atoms ______ from left to right across a period and ______ on descending in a group of normal elements.
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.
The metals of Group 2 from top to bottom are Be, Mg, Ca, Sr and Ba. Which one of these elements will form ions most readily and why?
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:
The size of an atom is indicated by its _______.
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 |
Write information about the given atomic numbers in the table. 10, 20, 7.
| Atomic Number | Electronic configuration | Group | Period | Element |
| 10 | ||||
| 20 | ||||
| 7 |
Which of the following is the correct order of atomic size?
Which of the following gives the correct increasing order of the atomic radii of O, F, and N?
Which one of the following depict the correct representation of atomic radius(r) of an atom?
|
(i) |
(ii) |
|
(iii) |
(iv) |
An element with the largest atomic radius among the following is ______.
Arrange the following as per the instruction given in the bracket:
Carbon, Fluorine, Beryllium (decreasing order of atomic size).
Arrange the following in order of increasing radii:
N, O, P
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.
Which one of the following has the largest atomic radius?
Give reason for the following:
The size of a Cl− ion is greater than the size of a Cl atom.
