Group 8A exhibits the highest first ionization energy. Which group do you expect to exhibit the highest second ionization energy ( E A 2 ) ? ( a ) 7A ( b ) 6A ( C ) 5A ( d ) 2A ( e ) lA
Group 8A exhibits the highest first ionization energy. Which group do you expect to exhibit the highest second ionization energy ( E A 2 ) ? ( a ) 7A ( b ) 6A ( C ) 5A ( d ) 2A ( e ) lA
Solution Summary: The author explains that group 8A exhibits the highest first ionization enthalpy (IE_1) because their octet is complete and
10. Which of the following element has paramagnetic
property?
(a) Mg
(b) P
(c) Ne
(d) Hg
11. Which of the following element is a main group
(representative group) element?
(a) Zn
(b) S
(c) Cu
(d) Co
12.
The energy required to remove an electron from an atom in
its ground state is called
(a) atomic number
(b) electronegativity
(c) electron affinity
(d) ionization energy
Boron, atomic number 5, occurs naturally as two isotopes, 10B and 11B, with natural abundances of 19.9% and 80.1%, respectively.
(a) In what ways do the two isotopes differ from each other? Does the electronic configuration of 10B differ from that of 11B?
(b) Draw the orbital diagram for an atom of 11B. Which electrons are the valence electrons?
(c) Indicate three ways in which the 1s electrons in boron differ from its 2s electrons.
(d) Elemental boron reacts with fluorine to form BF3, a gas. Write a balanced chemical equation for the reaction of solid boron with fluorine gas.
(e) ΔHf° for BF3(g) is -1135.6 kj/mol. Calculate the standard enthalpy change in the reaction of boron with fluorine.
(f) Will the mass percentage of F be the same in 10BF3 and 11BF3? If not, why is that the case?
Boron, atomic number 5, occurs naturally as two isotopes, 10B and 11B, with natural abundances of 19.9% and 80.1%, respectively.(a) In what ways do the two isotopes differ from each other? Does the electronic configuration of 10B differ from that of 11B? (b) Drawthe orbital diagram for an atom of 11B. Which electrons are the valence electrons? (c) Indicate three ways in which the 1s electrons inboron differ from its 2s electrons. (d) Elemental boron reacts with fluorine to form BF3, a gas. Write a balanced chemical equation forthe reaction of solid boron with fluorine gas. (e) ΔHf° for BF31g2 is -1135.6 kJ>mol. Calculate the standard enthalpy change in thereaction of boron with fluorine. (f) Will the mass percentage of F be the same in 10BF3 and 11BF3? If not, why is that the case?
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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