What is photography explain in short​

the art of capturing creation of nature and other thing etc

Explanation:

Photography is the art, application, and practice of creating durable images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film.

Other names: Science or art of creating durable images

Types: Recording light or other electromagnetic radiation

Related: Stereoscopic, Full-spectrum, Light field, Electrophotography, Photograms, ...

Inventor: Louis Daguerre (1839) Henry Fox Talbot (1839)

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.