Match the following. 1. isotopes
2. determine unique element
3. negligible mass
4. protons
5. arranged by atomic number
6. neutrons and protons
7. variation in atomic weight
8. forms lighter elements
9. forms heavier elements

A) Periodic Table
B) isotope
C) protons
D) fusion
E) atomic weight
F) atomic number
G) fission
H) electrons
I) neutrons

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

What volume of 0.500 mol/l hydrochloric acid, hci (aq) is required to react completely with 1.00 g of aluminum hydroxide, ai(oh)3 (s)?

What is the mass in grams of 0.94 moles of sodium bicarbonate, nahco3?