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THE REPRESENT=
ATIVE
ELEMENTS: GROUPS 5A THROUGH 8A 10.  =
; a. PF5; N is too small=
and
doesn't have low energy d-orbitals to expand its octet to form &n=
bsp;  =
; NF5=
. &n=
bsp; b. AsF5; I is too large to fit 5 atoms of=
I
around As. &n=
bsp; c. NF3; N is too small for three l=
arge
bromine atoms to fit around it. 14.  =
; 4
As(s) + 3 O2(g) → As4O6(s); 4 As(s) + 5 O2(g) =
594;
As4O10(s) &n=
bsp; As4O=
6(s)
+ 6 H2O(l) → 4 H3AsO3(aq); As4O10(s) =
+ 6 H2O(l)
→ 4 H3AsO4(aq) &n=
bsp; &n=
bsp;  =
; octahedral;
90°; d2sp3 34.  =
; S2N2
has 2(6) + 2(5) =3D 22 valence electrons.
40.  =
; a. F2 + H2O &=
#8594;
&n=
bsp;
&n=
bsp; b. 44. a. KrF2, 8 + 2(7) =
=3D 22 e-  =
; &n=
bsp; b. KrF4, 8 + 4(7) =
=3D 36 e-
linear; 180°; dsp3  =
; &n=
bsp;  =
; square
planar; 90°; d2sp3 c. =
XeO2F2,
8 + 2(6) + 2(7) =3D 34 e- =
All are: see-saw; ≈ 90° and ≈ 120&=
deg;;
dsp3 d. =
XeO2F4,
8 + 2(6) + 4(7) =3D 48 e- =
All are: octahedral; 90°; d2sp<=
sup>3 |
|
|
=
span>760 <=
span
style=3D'mso-spacerun:yes'> =
CHAPTER
20 THE REPRESENTA=
TIVE
ELEMENTS: GROUPS 5A