Chemistry
Write down the electronic configuration of the following: (i) , (ii) . Write down the number of electrons in X and neutrons in Y and the formula of the compound formed by X and Y.
Related Questions
Elements A, B and C have atomic numbers 9, 20 and 10 respectively.
(i) State which one is (1) a non-metal; (2) a metal; (3) chemically inert.
(ii) Write down the formula of the compound formed by two of the above elements.
Define : Proton, Electron, Neutron.
According to the Dalton's Atomic Theory, atoms of the same element are identical in all respects. But according to the Modern Atomic Theory, this postulate is proved wrong. Explain.
What are isotopes.