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BÀI TẬP TRẮC NGHIỆM HÓA ĐẠI CƯƠNG VÀ VÔ CƠ CẨM NANG DÙNG LUYỆN THI THPTQG CHẤT LƯỢNG CAO (COLOR BOOK)

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Chú ý<br />

O 2<br />

2s 2 2p 6 ?<br />

(A) Mg 2+ , Na + , F – (B) Ca 2+ , K + , Cl – .<br />

(C) Ca 2+ , K + , F – (D) Mg 2+ , K + , Cl – .<br />

O (Z=8), F (Z=9), Ne (Z=10),<br />

Na (Z=11), Mg (Z=12), Al (Z=13),<br />

S (Z=16), Cl (Z = 17), Ar (Z = 18),<br />

K (Z = 19), Ca (Z=20).<br />

P +<br />

, Y –<br />

2<br />

2s 2 2p 6 là:<br />

(A) Na + , Cl – (B) Li + , F – , Ne.<br />

(C) Na + , F – (D) K + , Cl – , Ar.<br />

Q Cation R + và Y – 2 3p 6 .<br />

(A) [Ne]3s 2 3p 5 và [Ar]4s 1 . (B) [Ne]4s 1 và [Ne]3s 2 3p 5 .<br />

(C) [Ar]4s 1 và [Ne]3s 2 3p 5 . (D) [Ar]3s 2 3p 5 và [Ne]4s 1 .<br />

R Ion R 3+ 5<br />

(A) [Ar]3d 5 4s 2 4p 1 . (B) [Ar]3d 9 .<br />

(C) [Ar]3d 6 4s 2 . (D) [Ar]3d 8 .<br />

S<br />

3+<br />

(A) [Ar]3d 5 4s 1 . (B) [Ar]3d 6 4s 2 .<br />

(C) [Ar]3d 6 4s 1 . (D) [Ar]3d 3 4s 2 .<br />

7<br />

16

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