Page 104 - Chemistry eBook

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(1) synthesis
(2) decomposition
(3) single replacement
(4) double rSepamlapcelemRenetgents Questions
WhichstatementexplainswhyneonisaGroup18 element?
(1) Neon is a gas at STP.
(2) Neon has a low melting point.
(3) Neon atoms have a stable valence electron
configuration.
(4) Neon atoms have two electrons in the first
shell.
Jan 2013 #7
Which element has chemical properties that are most similar to the chemical properties of fluorine?
(1) boron (2) chlorine
What occurs as two atoms of fluorine combine
to become a molecule of fluorine?
8
(3) neon
element in the
Choice #3 9
nergy states to
Explanation: Each group contains elements with the same number of
Answer
(1) A bond is formed as energy is absorbed.
(4) oxygen
valence electrons. Elements in Group 18 (noble gases) have 8 valence
nergy states to (2) A bond is formed as energy is released.
electrons, which(3i)s Aa sbtoabnlde ieslebcrtoroknencoansfiegunreartgioyni.sTahbesoereblemd.ents nergy states to (4) A bond is broken as energy is released.
nergy states to al number of
10 Whatisthenumberofpairsofelectronsthatare shared between the nitrogen atoms in a molecule of N2?
(1) 1 (3) 3
generally do not gain or lose electrons.
104 © UNIT 3: PERIODIC TABLE OF ELEMENTS