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.
By default, you have three sheet tabs Sheet1 the default worksheet, Sheet2, Sheet3, and an additional tab that allows you to add additional sheets to the Excel file. To rename a sheet tab, right-click on the sheet tab you want to rename and choose Rename. You can also delete, hide, protect, change color, and move any sheet tab through the same menu that appears when right-clicking a sheet tab. Tip: Use the shortcut key Alt + Shift + F1 to insert a new sheet while in Excel.