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प्रश्न
Atomic radius is expressed in the unit _______.
विकल्प
nanometer
picometer
micrometer
millimeter
उत्तर
Atomic radius is expressed in the unit picometer.
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संबंधित प्रश्न
What do you understand by atomic size? State its unit?
Why is the size of neon greater than fluorine?
Which is greater in size an atom or an anion?
Write the name and symbol of the element from the description.
The atom having the smallest 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?
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?
Fill in the blank by selecting the correct word from the bracket.
If an element has seven electrons in its outermost shell then it is likely to have the _____ atomic size among all the elements in the same period.
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:
Nanometer unit is used to measure atomic radius.
Moving from left to right, the size of the atom decreases.
Write an Explanation.
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 |
The electronic configuration of metal A is 2, 8, 18, 1.
The metal A when exposed to air and moisture forms B a green layered compound. A with con. H2 SO4 forms C and D along with water. D is a gaseous compound. Find A, B, C, and D.
Elements have been arranged in the following sequence on the basis of their increasing atomic masses.
| F, | Na, | Mg, | Al, | Si, | P, | S, | Cl, | Ar, | K |
- Pick two sets of elements which have similar properties.
- The given sequence represents which law of classification of elements?
Write the formula of the product formed when the element A (atomic number 19) combines with the element B (atomic number 17). Draw its electronic dot structure. What is the nature of the bond formed?
Atomic number of a few elements are given below
10, 20, 7, 14
- Identify the elements
- Identify the Group number of these elements in the Periodic Table
- Identify the Periods of these elements in the Periodic Table
- What would be the electronic configuration for each of these elements?
- Determine the valency of these elements
Which one of the following has the largest atomic radius?
