VCE Unit 1 Chemistry Revision questions AND ANSWERS with COMPLETE SOLUTIONS
Mendeleev's contribution to the Periodic Table - Answer Arranged known elements into vertical groups according to chemical properties. Arranged known elements in order of increasing relative atomic mass into horizontal periods. subshells - Answer Energy levels within the major shells. orbitals - Answer Region of space in which electrons are thought to move, under the influence of its attraction to the nucleus. Ground state of an atom - Answer The electron configuration of an atom when it is in its lowest-energy state. Isotope - Answer Atoms of an element with the same number of protons but a different number of neutrons. Excited state of an atom - Answer The electron configuration of an atom when it is in a higher energy state. s-block - Answer Contains the elements in group 1 (alkali metals) and group 2 (alkaline earth metals). These elements have a half-filled or filled subshell or s1 or s2 as their highest subshell. p-block - Answer Part of the periodic table that contains elements in groups 13-18. The elements have outer shell configurations from s2p1 to s2p6. d-block - Answer Part of the periodic table that contains the elements known as transition metals (located between the s and p- blocks). f-block - Answer Part of the periodic table that contains the lanthanides and actinides.
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