1-20号元素的原子序数、质子数、中子数、核外电子数、相对原子质量_百 ...答:5,硼,B,Boron,10.81,固态,2,3,0,0,0,0,0,2p1,2300C,2550C 6,碳,C,Carbon,12.011,固态,2,4,0,0,0,0,0,2p2,3500C,4827C 7,氮,N,Nitrogen,14.0067,气态,2,5,0,0,0,0,0,2p3,-209.9C,-195.8C 8,氧,O,Oxygen,15.9994,气态,2,6,0,0,0,0,0,2p4,-218.4C,-...