if hydrogen is the most common element on earth, what makes generating hydrogen expensive and polluting? What is a possible solution that would generate hydrogen without polluting the environment?

Although hydrogen is the most abundant element on Earth, it is rarely found in its pure form and is usually bonded to other elements, such as in water or hydrocarbons. In order to generate hydrogen gas, it must be extracted from these compounds through processes such as steam reforming, where high temperatures and pressure are used to separate hydrogen from natural gas, or electrolysis, where an electric current is passed through water to separate hydrogen and oxygen.

These processes can be expensive and energy-intensive, leading to high costs and carbon emissions. Additionally, the production of hydrogen from fossil fuels can release pollutants and greenhouse gases into the atmosphere, contributing to air pollution and climate change.

One possible solution to generate hydrogen without polluting the environment is through renewable sources of energy, such as solar or wind power. By using clean energy sources to power electrolysis, hydrogen can be produced without emissions of pollutants or greenhouse gases. This process, known as green hydrogen production, has the potential to be a sustainable and low-impact method of generating hydrogen for various applications, such as fuel cells for vehicles or energy storage. By transitioning to green hydrogen production, we can reduce our reliance on fossil fuels and help mitigate the environmental impacts of hydrogen generation.