1) Horizontal rows in Periodic Table a) Period b) Group c) Block 2) Vertical columns in Periodic Table a) Block b) Period c) Group 3) Divided into 4 major regions a) Group b) Block c) Period 4) One-half of the average distance (d) between the two covalently bonded atoms a) Atomic Radius b) Ionic Radius c) Ionisation Energy d) Electronegativity 5) Caused by mutual repulsion of electrons for each other a) Ionic Radius b) Electronegativity c) Shielding Effect d) Ionisation Energy 6) The distance between the nucleus and the electron in the outermost shell of an ion a) Electronegativity b) Atomic Radius c) Ionisation Energy d) Ionic Radius 7) The minimum energy required to remove an electron from an isolated gaseous atom or ion in its ground state a) Atomic Radius b) Ionic Radius c) Ionisation Energy d) Electronegativity 8) The relative ability of an atom to attract the bonding electron to itself when combined with another atom by a chemical bond a) Electronegativity b) Ionic Radius c) Ionisation Energy d) Atomic Radius 9) A compound formed when an element reacts with oxygen a) Hydroxide b) Oxide c) Peroxide 10) Electronegativity increases down a group a) True b) False

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