Ctrl+2

Alternatively known as Control+2 and C-2, ^2, Ctrl+2 is a keyboard shortcut to switch to the second tab in an Internet browser or other programs with tab support.
How to use the Ctrl+2 keyboard shortcut
To use this keyboard shortcut, press and hold either Ctrl key, and while continuing to hold, press 2.
For this shortcut, you need to use 2 above the top row keys, not on the numeric keypad.
Ctrl+2 in Microsoft Excel
In Microsoft Excel and all other spreadsheet programs, pressing Ctrl+2 toggles the bold text feature on and off for a cell.
Ctrl+2 in an Internet browser
With all major Internet browsers (e.g., Chrome, Edge, Edge, Internet Explorer, Firefox), pressing Ctrl+2 switches to the second tab.
Ctrl+2 in Microsoft Word
In Microsoft Word, pressing Ctrl+2 changes a line, paragraph, or all highlighted text to have double spacing.
You may also press Ctrl+1 to set the line spacing to single, or Ctrl+5 to set it to 1.5 spaces per line.
Related keyboard shortcuts and keys
Below are links to related keyboard shortcuts and individual key pages.