Search results
Results from the WOW.Com Content Network
The first known taxation occurred in Ancient Egypt around 3000–2800 BC. [3] Taxes consist of direct or indirect taxes and may be paid in money or as labor equivalent. All countries have a tax system in place to pay for public, common societal, or agreed national needs and for the functions of government.
Naturally occurring titanium (22 Ti) is composed of five stable isotopes; 46 Ti, 47 Ti, 48 Ti, 49 Ti and 50 Ti with 48 Ti being the most abundant (73.8% natural abundance).Twenty-one radioisotopes have been characterized, with the most stable being 44 Ti with a half-life of 60 years, 45 Ti with a half-life of 184.8 minutes, 51 Ti with a half-life of 5.76 minutes, and 52 Ti with a half-life of ...