N+o = 14+16 =20
1(умнож)на 2+16 =18
20+18=38.
2)Li,0 =7,0 + SiO =28 +16= 44
44+7,0=51
3) 55,0 + 1 +35+16= 107
N+o = 14+16 =20
1(умнож)на 2+16 =18
20+18=38.
2)Li,0 =7,0 + SiO =28 +16= 44
44+7,0=51
3) 55,0 + 1 +35+16= 107