1. How did Henry Mosely classify the elements in this periodic table? Show your acquaintance on modern periodic table. How the anomalies of Mendeleev's periodic table were solved in the modern periodic table? (1+2+2=5)​

Which statement is best described as a atom

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

In a water molecule, hydrogen and oxygen are held together by a(an) bond. a) double covalent b) ionic c) nonpolar covalent d) hydrogen e) polar covalent