Atoms and Isotopes Review

The atom shown has (a)   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 (a)   electrons

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

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

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

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

(a)  

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

(a)  

The number of valence electrons for chlorine is (a)   .