What are the characteristics of the atmospheres of venus

The atmosphere is mainly composed of Carbon Dioxide (96%), 3.5% nitrogen, and less than 1% is composed of carbon monoxide, argon, sulfur dioxide and water vapor. Venus's atmosphere is very hot and dense The Venusian atmosphere is crossed by occasional electrical phenomena of remarkable energy The presence of a dense atmosphere and particularly strong winds causes the surface temperature to be approximately 710-740 K throughout the planet The atmospheric pressure on the surface reaches the value of 90 atmospheres.