Question: What is the birthdate of this English physicist, who published first the Long Form periodic table or Modern periodic table and published Moseley's Law?

<P0-S0> Dmitri Mendeleev published the first periodic table of the chemical elements in 1869 based on properties which appeared with some regularity as he laid out the elements from lightest to heaviest. <P0-S1>  When Mendeleev proposed his periodic table, he noted gaps in the table, and predicted that as-then-unknown elements existed with properties appropriate to fill those gaps. <SEP> <P1-S0>  The law was discovered and published by the English physicist Henry Moseley in 1913. <P1-S1>  It is historically important in quantitatively justifying the conception of the nuclear model of the atom, with all, or nearly all, positive charges of the atom located in the nucleus, and associated on an integer basis with atomic number. <P1-S2>  Until Moseley's work, "atomic number" was merely an element's place in the periodic table, and was not known to be associated with any measureable physical quantity. <P1-S3> Moseley's law is an empirical law concerning the characteristic x-rays that are emitted by atoms. <P1-S4>  Moseley was able to show that the frequencies of certain characteristic X-rays emitted from chemical elements are proportional to the square of a number which was close to the element's atomic number; a finding which supported Van den Broek and Bohr's model of the atom in which the atomic number is the same as the number of positive charges in the nucleus of the atom. <P1-S5>  In brief, the law states that the square root of the frequency of the emitted x-ray is proportional to the atomic number. <SEP> <P2-S0> A period 1 element is one of the chemical elements in the first row (or period) of the periodic table of the chemical elements. <P2-S1>  The periodic table is laid out in rows to illustrate periodic (recurring) trends in the chemical behaviour of the elements as their atomic number increases: a new row is begun when chemical behaviour begins to repeat, meaning that elements with similar behaviour fall into the same vertical columns. <P2-S2>  The first period contains fewer elements than any other row in the table, with only two: hydrogen and helium. <P2-S3>  This situation can be explained by modern theories of atomic structure. <P2-S4>  In a quantum mechanical description of atomic structure, this period corresponds to the filling of the 1s orbital. <P2-S5>  Period 1 elements obey the duet rule in that they need two electrons to complete their valence shell. <P2-S6>  The maximum number of electrons that these elements can accommodate is two, both in the 1s orbital. <P2-S7>  Therefore, period 1 can have only two elements. <SEP> <P3-S0>  This stemmed from his development of Moseley's law in X-ray spectra. <P3-S1>  Moseley's Law justified many concepts in chemistry by sorting the chemical elements of the periodic table of the elements in a logical order based on their physics. <P3-S2> Henry Gwyn Jeffreys Moseley (23 November 1887 – 10 August 1915) was an English physicist, whose contribution to the science of physics was the justification from physical laws of the previous empirical and chemical concept of the atomic number. <P3-S3>  He published first the Long Form periodic table or Modern periodic table which is used till date.