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Chemistry, 30.10.2021 21:30 justaguy15

CHo các nguyên tử X, Y, Z thỏa mãn những điều kiện sau: Nguyên tử X có khối lượng =40, hạt nhân có chứa 22 hạt proton
Nguyên tử X có 3 lớp e, lớp ngoài cùng có 7 electron
Phân mức năng lượng cáo nhất trong nguyên tử Z là 4s1
a) viết cấu hình e của X, Y, Z. Cho biết nguyên tố nào là kim loại, phi kim hay khí hiếm
b) xác định vị trí của X, Y, Z trong bảng tuần hoàn
c) viết công thức ô-xit cao nhất, hidroxit tương ứng, hợp chất khí với hidro

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CHo các nguyên tử X, Y, Z thỏa mãn những điều kiện sau: Nguyên tử X có khối lượng =40, hạt nhân có...
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