Std-9th Science-1 Ch.4 Measurement of matter P-2
ฝัง
- เผยแพร่เมื่อ 20 ม.ค. 2025
- Chemical symbols of element-
Molecules of elements - Monoatomic molecules= He; Ne; Ar; Kr
Diatomic molecule= hydrogen; nitrogen
Triatomic molecule= ozone
Molecules of compounds- Polyatomic molecule
Molecular mass- Sum of atomic masses of all the constituents atoms
