The atomic weight of an atom, or the molecular weight of a molecule, is its mass relative to that of a(n) ________ atom. This is essentially equal to the number of protons plus neutrons that the atom or molecule contains.
The atomic weight of an atom, or the molecular weight of a molecule, is its mass relative to that of a(n) ________ atom. This is essentially equal to the number of protons plus neutrons that the atom or molecule contains.
The vacancy is in the same direction as the atom.
The vacancy is in the same direction as the atom.
Corresponding to the sun in the solar system is the nucleus of the atom.
Corresponding to the sun in the solar system is the nucleus of the atom.
They managed to ____ the atom. A: share B: separate C: split
They managed to ____ the atom. A: share B: separate C: split
中国大学MOOC: The vacancy is in the same direction as the atom.
中国大学MOOC: The vacancy is in the same direction as the atom.
The vacancy is in the same direction as the atom. A: 正确 B: 错误
The vacancy is in the same direction as the atom. A: 正确 B: 错误
atom
atom
atom ____(a.)
atom ____(a.)
The size of atom is ( ).
The size of atom is ( ).
The density scale of atom is ( )
The density scale of atom is ( )