The modern periodic law was given by whom?

1. Mendeleev arranged elements by atomic mass and gave the older periodic law. 2. Henry Moseley in 1913 showed that atomic number, not mass, decides periodicity. 3. The modern periodic law states that properties are periodic functions of atomic number. 4. So the law is credited to Moseley. _Source: Selina Concise Chemistry ICSE Class 10, Ch 1 'Periodic Table' (aplustopper.com extract)_