Give the name and symbol of elements having the valence configuration [ noble gas ] ns 2 np 1 . Concept introduction: Noble gases are group of elements with very low chemical reactivity. The six noble gas elements that have been isolated are: Helium Neon Argon Krypton Xenon Radon The atomic number of Helium is 2 and symbol is He , Neon is 10 and symbol is Ne , Argon is 18 and symbol is Ar , Krypton is 36 and symbol is Kr , Xenon is 54 and symbol is Xe , Radon is 86 and symbol is Rn . The elements having the electronic configuration of [ noble gas ] ns 2 np 1 have three valence electrons in their outermost shell. Such elements belong to group 3A of periodic table and lose these three electrons to gain noble gas configuration. Group 3A is boron family and the other elements of this group are aluminium, gallium, indium and thallium.
Give the name and symbol of elements having the valence configuration [ noble gas ] ns 2 np 1 . Concept introduction: Noble gases are group of elements with very low chemical reactivity. The six noble gas elements that have been isolated are: Helium Neon Argon Krypton Xenon Radon The atomic number of Helium is 2 and symbol is He , Neon is 10 and symbol is Ne , Argon is 18 and symbol is Ar , Krypton is 36 and symbol is Kr , Xenon is 54 and symbol is Xe , Radon is 86 and symbol is Rn . The elements having the electronic configuration of [ noble gas ] ns 2 np 1 have three valence electrons in their outermost shell. Such elements belong to group 3A of periodic table and lose these three electrons to gain noble gas configuration. Group 3A is boron family and the other elements of this group are aluminium, gallium, indium and thallium.
Solution Summary: The author explains that noble gases are group of elements with very low chemical reactivity. They have three valence electrons in their outermost shell.
Interpretation: Give the name and symbol of elements having the valence configuration [noble gas]ns2np1.
Concept introduction: Noble gases are group of elements with very low chemical reactivity. The six noble gas elements that have been isolated are:
Helium
Neon
Argon
Krypton
Xenon
Radon
The atomic number of Helium is 2 and symbol is He, Neon is 10 and symbol is Ne, Argon is 18 and symbol is Ar, Krypton is 36 and symbol is Kr, Xenon is 54 and symbol is Xe, Radon is 86 and symbol is Rn.
The elements having the electronic configuration of [noble gas]ns2np1 have three valence electrons in their outermost shell. Such elements belong to group 3A of periodic table and lose these three electrons to gain noble gas configuration. Group 3A is boron family and the other elements of this group are aluminium, gallium, indium and thallium.
Draw the Lewis structure for the xenon tetrafluoride (XeF4) molecule.
C
C
a
X
O:
G
1 =
?
Answer the following questions that relate to the chemistry of nitrogen.
(a) Two nitrogen atoms combine to form a nitrogen molecule, as represented by the following equation.
2 N(g) ® N2(g)
Using the table of average bond energies below, determine the enthalpy change, AH, for the reaction.
Average Bond
Energy (k) mol-1)
Bond
N-N
160
N=N
420
N°N
950
(b) The reaction between nitrogen and hydrogen to form ammonia is represented below.
N2(g) + 3 H2(g)® 2 NH3(g)
AH° = -92.2 kJ
Predict the sign of the standard entropy change, AS', for the reaction. Justify your answer.
(C) The value of AG° for the reaction represented in part (b) is negative at low temperatures but positive at high temperatures. Explain.
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell