False. An atom is considered stable or “happy” when it has a full outer shell of electrons. For most atoms, this means having 8 electrons in their outer shell, a concept known as the octet rule. However, there are exceptions. For example, hydrogen and helium are stable with 2 electrons in their outer shell.
Atoms with 7 electrons in their outer shell are typically one electron short of being stable. They tend to gain an electron to achieve a full outer shell, often forming negative ions in the process. This behavior is common in elements like fluorine and chlorine, which are highly reactive due to their desire to complete their outer shell.