In the vertical columns of the periodic table, as the atomic numbers increase:

1.The numbers of electron shells increase.
2.The ionization energies increase.
3.The numbers of electrons in the valence shell increase.
4.The tendency to lose electrons decreases.
the size of the atom decreases

Question

In the vertical columns of the periodic table, as the atomic numbers increase:

1.The numbers of electron shells increase.
2.The ionization energies increase.
3.The numbers of electrons in the valence shell increase.
4.The tendency to lose electrons decreases.
the size of the atom decreases

anonymous · Answer

The number of electron shells increase