Which transuranium elements belong to the actinoid series?

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A color-coded periodic table of the elements displays each element's symbol and atomic number, with categories such as alkali metals, noble gases, halogens, transition metals, and actinoid elements distinguished by different background colors. — transuranium element Modern version of the periodic table of the elements (printable).

The actinoid series consists of 15 consecutive elements with atomic numbers 89 through 103, ranging from actinium to lawrencium.1

Transuranium elements are defined as those with atomic numbers greater than 92 (beyond uranium). Consequently, the transuranium elements that belong to the actinoid series are those with atomic numbers 93 through 103. These 11 elements are:2

Neptunium (93)
Plutonium (94)
Americium (95)
Curium (96)
Berkelium (97)
Californium (98)
Einsteinium (99)
Fermium (100)
Mendelevium (101)
Nobelium (102)
Lawrencium (103)

Elements with atomic numbers higher than 103 are classified as transactinoids rather than actinoids.2