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TOPPER. Chú ý
nhân.
là chu kì.
.
21
Ô nguyên
Chu kì
Nhóm
VD1: Na (Z = 11): [Ne] 3s1; Ca (Z = 20): [Ar]4s2.
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VD2: Fe có Z = 26
VD3: Fe (Z = 26): 1s22s22p63s23p63d64s2
Na (Z = 11): 1s22s22p63s1
4.
3.
anpb
VD4: Na (Z = 11): [Ne]3s1
Al (Z = 13): [Ne]3s23p1
ansb
a+b
3–7
8 – 10
11, 12
VD5: Cr (Z = 24): [Ar]3d54s1
Nhóm
IIIB – VIIB
VIIIB
IB và IIB
Fe (Z = 26): [Ar]3d64s2
Cu (Z = 29): [Ar]3d104s1
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1
không
(A
(B
(C
(D
2
(A
(B
(C
(D
3
(A) 5.
(B) 7.
(C) 9.
(D) 16.
4
(A
(B
(C
(D
5
(A
(B
không
(C
(D
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(A) 2.
(B) 3.
(C) 4.
(D) 1.
7
(A) 2.
(B) 3.
(C) 4.
(D) 1.
8
(A) IIIA.
(B) VIB.
(C) VA.
(D) VIA.
9
(A) IIA.
34s2
(B) VA.
(C) VB.
(D) IIIB.
3
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VD6:
Mg (Z = 12), Cl (Z = 17), Fe (Z = 26).
TOPPER. Chú ý
– Mg (Z = 12): 1s22s22p63s2
s, p.
– Cl (Z = 17): 1s22s22p63s23p5
d, f.
– Fe (Z = 26): 1s22s22p63s23p63d64s2
(A) chu kì 3, nhóm VA.
(C) chu kì 2, nhóm VIIA.
(B) chu kì 3, nhóm VIIA.
(D) chu kì 2, nhóm VA.
2Z N 52
N Z 1
Z 17
N 18
– X (Z = 17): 1s22s22p63s23p5
VD8: Cation M+
6
(A) chu kì 3, nhóm IIIA.
(C) chu kì 3, nhóm IIA.
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(B) chu kì 2, nhóm VIIA.
(D) chu kì 3, nhóm IA.
+:
1s22s22p6
M: 1s22s22p63s1
4
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A
(A
(C
(B
(D
B
22s22p2
(A
(C
(B
(D
C
1
(A
(C
(B
(D
D
23p5
(A
(C
(B
(D
E
14s2
(A
(C
(B
(D
F
74s2
(A
(C
(B
(D
G
(A) IIA.
(B) IIB.
(C) VIB.
(D) VIIIB.
H
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(A
(C
(B
(D
5
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I
(A
(C
J
(B
(D
Anion X- và cation Y2+
ngoài cùng là 3s23p6
A)
B)
C)
D)
K Ion M2+
(A) chu kì 4, nhóm VIIIB.
(C) chu kì 4, nhóm VIIIA.
L
(A) chu kì 3, nhóm IIIA.
(C) chu kì 3, nhóm VIA.
(B) chu kì 4, nhóm VIB.
(D) chu kì IV, nhóm IIA.
3+
(B) chu kì 4, nhóm IA.
(D) chu kì 3, nhóm IIA.
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VD9:
1s22s22p63s2
VD10:
N
1,52Z
3Z 28 3,52Z
7,95 Z 9,33
22s22p4
22s22p5
1s22s22p5
Z=9
M
(A) [Ne]3s2.
(B) [Ar]3s2.
(C) [Ar]4s2.
(D) [Ar]4p2.
N
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(A) [Ar]3d6.
(B) [Ar]3d44s2.
(C) [Ar]3d54s1.
(D) [Ar]3d64s2.
O
(A) 2.
(B) 4.
(C) 5.
(D) 6.
7
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P
(A) [Ne]3s1.
(B) [Ne]3s23p2.
(C) [Ne]3s2.
(D) [Ne]3s23p1
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Câu
1
D
Câu
E
C
2
C
F
D
3
B
G
D
4
B
H
B
5
C
I
D
6
B
J
C
7
B
K
A
8
C
L
A
9
C
M
C
A
D
N
C
B
C
O
B
C
B
P
D
D
C
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