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⢹⡇⣿⣿⣿ ⣞⣯⣷⣾⣿⣿⣧⡹⡆⡀ ⢹⡌ ⢿⣿⣿⣿⡞⣿⣿⣿
⣾⡇⣿⣿⡇⣾⣿⣿⣿⣿⣿⣿⣿⣿⣄⢻⣦⡀ ⢸⡌ ⣿⣿⣿⡽⣿⣿
⡇⣿ ⣿⡇⡟ ⣉ ⡿⣿⣿⣿⣿⣿⣦⣄⡉ ⢿⣿⣝⣿
⢿⡄ ⣧⣷⣸⡇ ⢰⣌⣾⣿⣿⣿⣿⣿⣿⣶⣤⣤⡀ ⢮
⢸⣧ ⢘⢻⣿⡇⢀⣀ ⣸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⡀ ⢀
⣿⡆⢸⣿⣿⣿⣬⣭⣴⣿⣿⣿⣿⣿⣿⣿⣯ ⢿⡿ ⢸
⢿⣿⡀⣿⣿⣿⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣿⣿⣿⣿⡾ ⡇⢀
⢸⣿⡇ ⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣏⣫⣻⡟⢀ ⣿⣷⣾
⢸⣿⡇ ⣿⣿⣿⣮⣿⣿⣿⣿⣿⣿⣿⣿⡿ ⢀⡇⣿⣿
⣿⡇⢀⡲ ⢿⣿⣿ ⣰ ⢸⣿⣿⣿
现在我有冰淇淋
我很喜欢冰淇淋
但是
速度与激情9
比冰淇淋
速度与激情
速度与激情9
我最喜欢
所以…现在是音乐时间
准备 1 2 3
两个礼拜以后
速度与激情9 ×3
不要忘记
不要错过
记得去电影院看速度与激情9
为非常好电影
动作非常好
差不多一 冰淇淋
再见
metal + metal = metallic bond
Diamond graphite quartz = giant covalent bond
non-metals forming negative electron
anion
atom and ion have different physical and chemical properties
because of different numbers of electrons
positive ion = metals
negative ions = non metals
transfer of electron =(formed) ionic bond
metal+nonmetal= ionic compound