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प्रश्न
Match the atomic numbers 4,8,10,15 and 19 with each of the following:
An element which does not form ion
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उत्तर
Atomic number 10
Electronic configuration (10): 2,8
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संबंधित प्रश्न
State the mass number, the atomic number, number of neutrons and electronic configuration of the following atoms.
`""^12""_6C, ""^16""_8O, ""^19""_9F, ""^20""_10Ne, ""_13""Al""^27, ""_17""Cl""^35`
Also, draw atomic diagrams for them.
Fill in the blank of the following statement :
All the mass of an atom is concentrated in a small region of space called the ___________.
An atom of an element has two electrons in the M shell.
What is the (a) atomic number (b) number of protons in this element?
The diagram represents an isotope of hydrogen [H]. Answer the following:
Atomic no. = 1
Mass no. = 1
If an isotope of ‘H’ has mass no. = 3, how many neutrons does it have.
Elements X, Y, Z have atomic numbers 6, 9 and 12 respectively. Which one:
- forms anion – negative ion;
- forms cation – positive ion;
- has 4 electrons in the outermost orbit. [Y, Z, X]
Differentiate between the following term:
Atomic number and mass number
Explain the following terms.
- Proton
- Electron
- Neutron.
The No. of electrons in the outermost shell of the atom of an inert gas ______.
When an atom gives electrons from its outermost shell, it becomes ______ charged.
In which one of the following, the number of protons is greater than the number of neutrons but number of protons is less than the number of electrons?
