Atoms and Isotopes Review

The atom shown has __________ valence electrons.

Tags

NGSS.MS-PS1-1

Which subatomic particle has a positive charge?

• electrons

• neutrons

• protons

What subatomic particle makes every atom unique?

• neutrons

• protons

• electrons

The first shell (level) can hold ____________ electrons

The second shell (level) can hold up to ________ electrons.

The third level (shell) of an atom can hold up to _________ electrons.

The 4th level (shell) of an atom can hold up to __________ electrons.

Periodic Table to answer: What is the atomic number of Chlorine?

What is the number of electrons in one atom of Chlorine?

The number of valence electrons for chlorine is ________.