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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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VD9:<br />

VD10:<br />

1s 2 2s 2 2p 6 3s 2<br />

N 1,52Z<br />

3Z 28 3,52Z<br />

7,95 Z 9,33<br />

2<br />

2s 2 2p 4<br />

2<br />

2s 2 2p 5<br />

Z = 9 1s 2 2s 2 2p 5<br />

M<br />

(A) [Ne]3s 2 . (B) [Ar]3s 2 .<br />

(C) [Ar]4s 2 . (D) [Ar]4p 2 .<br />

N<br />

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

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

O<br />

(A) 2. (B) 4. (C) 5. (D) 6.<br />

7<br />

33

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