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Periodic Table of Elements
Science Chapter 5
Terms in this set (21)
Name 3 characteristics of a valence electron.
Loosely held by the nucleus, shown on electron dot diagram, and transferred or shared in bonding
A _______ ion is formed when an atom loses an electron.
______ ions are composed of more than one atom.
An attraction between a positive metal ion and the electrons surrounding it is _______.
T or F: atoms in a nonpolar covalent bond carry slight electrical charges
What is not a characteristic that results from metallic bonding?
Hard, brittle crystals
A neutral group of atoms joined by a covalent bond is what?
T or F: ions form electrically negative compounds
A covalent bond is called ______ if the atoms share one or more pairs of electrons.
A molecule in which the polar covalent bonds do not cancel out will be_______.
Most atoms become less reactive after a change to a total number of ______ valence electrons.
T or F: the most stable elements in the periodic table are found in the alkali metals
False, inert gases
A ________ is an atom or group of atoms that has an electric charge.
Elements in group 17, the halogen family, are very reactive because their atoms have ________ valence electrons?
A ________ is a mixture made of two or more elements that has the properties of a metal.
T or F: freely moving electrons account for electrical conductivity in metals
The electrons of an atom that are the highest energy level are called what?
What number remains the same from top to bottom in a group in the periodic table?
In a double bond, _______electrons are shared.
In a reaction atoms with _______ valence electrons will probably gain two electrons or share two covalent bonds.
T or F: a group of elements shares the same number of valence electrons
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