Periodic Table 1
The electrons involved in chemical reactions are these.
What are valence electrons?
Valence electron 4, energy level 5
What is Phosphorus?
The atomic number tells you this.
What is the number of protons (and electrons) an atom of an element should have?
Group 16, Period 2
What is Oxygen?
Elements of the same row share this characteristics.
What are Energy level?
These are shiny, good conductors, solids at room temperature, shiny, ductile, and malleable
What are the properties of metals?
An atom with a completely full outer most (valence) energy level is this.
unreactive or stable
These elements have characteristics of both metals AND nonmetals
What are metalloids?
The columns on a periodic table are called this.
What are groups?
These are the properties of metalloids.
What are many properties of both metals and nonmetals?
Group 17, period 4
What is Bromine?
Which of the following elements could be in this group?
- Shiny and Silvery white
- low density and low melting point
- Contains 2 valence electron
A.Nitrogen
B. Lithium
C. Calcium
D. Helium
What is Calcium?
Group 17 contains highly reactive nonmetals with seven valence electrons that tend to react violently and are more commonly known as this.
What are halogens?
A student in Mr. Martinez’s science classroom is investigating the properties of Polonium (Po). He learns that it is a rare and highly radioactive metal making it highly dangerous. How many valence electrons does one atom of Polonium contain?
What are 6 Valence Electron?
Elements in the same group share this.
What are the same number of valence electrons
These are the properties of nonmetals.
What are brittleness, low boiling/melting points, dull, and are good insulators?
Group 18 elements are extremely nonreactive nonmetals known as this.
What are noble gases?
Extremely reactive elements in group 1 have only 1 valence electron and are known as this.
What are alkali metals?
The rows on a periodic table are known as this.
What are periods?
The three classes of elements are these.
What are metals, metalloids, and nonmetals?
An unknown metal is extremely soft, silvery grey and very reactive when floated on water. It has 1 valence electron.
What is group 1 or alkali metals?
The modern periodic table is organized according to this.
What are by increasing atomic number?
The Element is missing and I only have 7 protons and 6 electrons
What is Nitrogen?
The following statements best compares the reactivity of fluorine and neon
A. Fluorine is more reactive than neon because neon has a full set of 8 valence electrons while Fluorine does not.
B. Fluorine is more reactive than neon because fluorine has fewer protons than neon.
C. Fluorine is less reactive than neon because fluorine has 7 valence electrons and neon has 8 valence electrons
D. Fluorine is less reactive than neon because neon has a greater atomic mass than fluorine.
What are A. Fluorine is more reactive than neon because neon has a full set of 8 valence electrons while Fluorine does not?
Reactive elements in group 2 have only 2 valence electrons and are known as this.
What are alkaline Earth metals?