State the mendeleev periodic law .Write two achievements of his periodic table
Answers
in Mendeleev periodic table properties of elements are periodic function of their atomic masses. the war began collinson the mingling video disable are called you by the horizontal rose are called periods. the two achievements of his periodic table: atomic masses of some elements where revised so as to give them proper place in the periodic table in accordance with their properties for example the previously determine atomic mass of beryllium 14. 0 line was changed the current number value 19. 4 and the beryllium was placed before there was no place reserved for noble gases in winter is original periodic table howeverthere was no place reserved for noble gases in winter is original periodic table however when noble gases such as Helium neon and Argon but discovered towards the end of 19th century Mendeleev 3880 group without disturbing the original periodic table in which the noble gases emitted very well.