Question
Differentiate between $d-$block and $f-$block elements.
| $d-$Block elements | $f-$Block elements |
| $d-$Block contains elements from group $3$ to group $12.$ | $f-$Block contains elements of lanthanide and actinide series. |
| It is present in the middle of the modern periodic table. | $f-$block elements are present below the modern periodic table as two separate rows. |
| They are also known as transition elements. | They are also known as inner transition elements. |
| The last electron in the $d-$block elements enters in $d$ orbital. | The last electron in the $f-$block elements enters in $f$ orbital. |
| General outer electronic configuration of $d-$block elements is $ns^{0-2} (n-1)d^{1-10} .$ | General outer electronic configuration of $f-$block elements is $ns^2 (n-1) d^{0-1} (n-2) f^{114}.$ |
| e.g. $Cu, Zn, Cr, Ti, V,$ etc. | e.g. $Ce, Pr, Nd Th, U, Np,$ etc. |
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| Substance | Mass Number | Number of | ||
| Protons | Neutrons | Electrons | ||
| Carbon-14 | ||||
| Lead-208 | ||||
| Chlorine-35 | ||||
| Uranium-238 | ||||
| Oxygen-18 | ||||
| Radium-223 | ||||