Why do atomic number is called the fingerprint of elements?
Answer: The chemical and physical properties of an atom are solely determined by the number of its electrons and hence by its nuclear charge: the nuclear charge is a unique “fingerprint” of an element and Z labels the chemical elements uniquely.
What does fingerprint mean?
1 : the impression of a fingertip on any surface also : an ink impression of the lines upon the fingertip taken for the purpose of identification. 2 : something that identifies: such as. a : a trait, trace, or characteristic revealing origin or responsibility.
What are the elements used for?
| ELEMENT | USES | |
|---|---|---|
| 1) | Aluminum | A light metal used in making airplanes, buildings, pots & pans, etc. |
| 2) | Bromine | Used in photography, medicines, insecticides, etc. |
| 3) | Calcium | A soft, metallic chemical element found in limestone, marble, chalk, etc. |
| 4) | Carbon | Found in coal, oil gas, living things, & inks |
Which elements have no uses?
A few elements have no current uses, such as protactinium and berkelium. The short-lived, man-made elements starting with einsteinium have no uses at the moment either, as they don’t stick around long enough for scientists to experiment on them.
Which element is the most useful?
Life demands a huge variety of molecules, with chains and rings and branches and cages—tricks that iron rarely attempts. And so we are left with carbon, the most versatile, most adaptable, most useful element of all. Carbon is the element of life.
Why black is a color?
All other colors are reflections of light, except black. Black is the absence of light. Some consider white to be a color, because white light comprises all hues on the visible light spectrum. And many do consider black to be a color, because you combine other pigments to create it on paper.