Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, and image forming apparatus

An electrostatic charge image developing toner comprising:

• a toner particle containing a binder resin;
• and
• an external additive containing:
• alumina particles having a volume average particle diameter of more than 5 nm and 80 nm or less;
• and
• silica particles having a volume average particle diameter of 10 nm or more and 90 nm or less,
• wherein in the toner particle,
• a Net intensity NA of a total of an alkali metal element and an alkaline earth metal element, measured by fluorescence X-ray analysis, is 0.10 kcps or more and 1.30 kcps or less,
• the alkali metal element and the alkaline earth metal element contain at least one selected from the group consisting of Na, Mg, and Ca, and
• a ratio (Ws/Wa) of a content Ws of the silica particles to a content Wa of the alumina particles is more than 0.5 and less than 35.