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.
In Excel 2010, the Sheet tabs displayed in a Workbook can be hidden using the Advanced options. Click the File menu and then the Options link.In Excel Options window, select the Advanced the tab and scroll down to the Display options for this workbook section. To hide the Sheets tabs in Workbook, un tick the checkbox labelled as Show sheet tabs. Click the OK button to save the changes.n Excel 2010, the Sheet tabs displayed in a Workbook can be hidden using the Advanced options. Click the File menu and then the Options link.