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प्रश्न
Write the name and symbol of the element from the description.
The atom having the smallest atomic mass.
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उत्तर
Name: Hydrogen
Symbol: H
संबंधित प्रश्न
What do you understand by atomic size? State its unit?
Arrange the elements of second and third periods in increasing order of their atomic size (excluding noble gases).
Why is the size of sodium is greater than magnesium?
Give reason for the following:
Argon atom is bigger than chlorine atom.
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:
The size of an atom is indicated by its ______.
Atomic radius is expressed in the unit ______.
Right or wrong sentence.
Nanometer unit is used to measure atomic radius.
Right or wrong sentence.
The size of an atom depends on the number of valence electrons.
Write scientific reason.
In same period, boron and oxygen elements have different atomic size.
Carbon belongs to the second period and Group 14. Silicon belongs to the third period and Group 14. If the atomic number of carbon is 6, the atomic number of silicon is ______
Which of the following gives the correct increasing order of the atomic radii of O, F, and N?
Which of the following gives the correct increasing order of the atomic radii of O, F and N?
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?
- In below ladder symbols of elements are jumbled up. Rearrange these symbols of elements in the increasing order of their atomic number in the Periodic Table.
- Arrange them in the order of their group also.
Arrange the following in order of increasing radii:
N, O, P
Explain your choice.
