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प्रश्न
The electron shell ______ is nearest to the nucleus.
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उत्तर
The electron shell K is nearest to the nucleus.
संबंधित प्रश्न
Write the names of the elements present in the :-
Sulphuric acid
Write the names of `"FeS"` compounds :
Write the names of `"Na"_3"PO"_4` compounds :
Fill in the blank
An ion with negative charge is called _______
An atom has 13 protons and 14 neutrons.
How many electrons would be present in this atom ?
Why is it not possible to see an atom even with the most powerful microscope ?
Fill in the following blanks with suitable words :
In water, the proportion of oxygen and hydrogen is .............. by mass.
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An atom of element E contains 3 protons, 3 electrons and 4 neutrons :
(a) What is its atomic number?
(b) What is its mass number?
(c) Write the electronic configuration of the element E.
(d) State whether element E is a metal or non-metal. Why?
(e) What type of ion, cation or anion, will be formed by an atom of element E? Why
(f) Write the symbol of the ion formed by an atom of element E.
(g) What could element X be?
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Define the following term:
Atom
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| Datum | To deduce |
| \[\ce{_11^23Na}\] | Neutron number |
| \[\ce{_6^14C}\] | Mass number |
| \[\ce{_17^37 Cl}\] | Proton number |
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of phosphorus
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
In the nucleus of `""_20"Ca"^40`, there are ______
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