Periodic Table - Take Home Quiz #1

Agnes Szakacs

02/23/15

Period 2/3

Unit 3:1 - Periodic Table Take Home Quiz Questions

1. How many valence electrons does zirconium have?
1. Zirconium has 2 valence electrons
2. How many valence electrons does phosphorus have?
1. Phosphorus has 5 valence electrons
3. Arrange these elements according to increasing electronegativity:  O, Ba, V, Al
1. Aluminum 1,61, Vanadium 1,66, Barium 2,6,  Oxygen 3,44
4. Arrange these elements according to increasing size:  Pd, Cs Ca, N
1. Neon 38pm, Palladium 169pm, Calcium 194pm, Cesium 298pm
5. Arrange these elements according to decreasing size:  Al, Fe,F, Si
1. Iron 156pm, Aluminum 118pm, Silicon 111pm, Fluorine 42pm
6. Arrange these elements according to decreasing electronegativity:  Cl, W, Cs, Ag
1. Chlorine 3,16, Cesium 2,66, Silver 2,2, Tungsten 1,3
7. What are the two most common isotopes of He?
1. The Helium-3, and Helium-4
8. What are the two most common isotopes of Li?
1. Li-6, and Li-7
9. What element is in group 5, row 5?
1. Niobium
10. Name an element that has similar reactivity to Calcium.

There is an element called Barium, they are both in the Alkaline Earth Metal Family