Hydrogen, oxygen and nitrogen are counted as some most important elements and found abundantly. About 75% of this universe is composed of hydrogen and helps different other matters to sustain. Large starts and planets, electrons and protons are also composed of hydrogen.
A sheet tab appears at the bottom of your worksheet. It has the name of the worksheet on it, which can be changed and you can also change its colour. This can be done by right clicking on it and picking the option from the shortcut menu that appears. By clicking a sheet tab, you can make that sheet the active sheet so that you can work on it.
Tabs | Minimize the Ribbon | Customize the Ribbon. Excel selects the ribbon's Home tab when you open it. Learn how to minimize and customize the ribbon. The tabs on the ribbon are: File, Home, Insert, Page layout, Formulas, Data, Review and View. The Home tab contains the most frequently used commands in Excel. Note: the File tab in Excel 2010 replaces the Office Button in Excel 2007. You can minimize the ribbon to get extra space on the screen. Right click anywhere on the ribbon, and then click Minimize the Ribbon (or press CTRL + F1). Result. Excel 2010 makes it possible to easily create your own tab and add commands to it.