Size of an Atom
Size of an Atom
Size of Atoms: Atoms are very small and their radius is measured in nanometres. 1nm=m.
The atomic radius of a chemical element is a measure of the size of its atom, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons. Since the boundary is not a well-defined physical entity,there are various non-equivalent definitions of the atomic radius. Hydrogen atom is the smallest atom and its radius is 0.1 nm.
Which of the following is incorrect : (a) 1 nm equals to 10-9 m. (b) Radius of Hydrogen atom is 10 nm. (c) 1/109 m equals to 1mm. (d) Hydrogen atom is the smallest atom | |||
| Right Option : B | |||
| View Explanation | |||
1 nm equals to ____________. | |||
| Right Option : B | |||
| View Explanation | |||
Identify the correct statement : (a) Hydrogen atom is the smallest atom and its radius is 0.1 nm. (b) 1/109 m equals to 1nm. (c) 1 nm equals to 10-9 m. | |||
| Right Option : D | |||
| View Explanation | |||
Students / Parents Reviews [10]
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
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10thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
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Shivam Rana
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8thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
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