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- 1. Multiple Choice
Why do carbon, silicon, and tin all react similarly?
They are located in the same period
They have an even atomic number
They have the same number of energy levels
They are located in the same group
- 2. Multiple Choice
What do Rb, Re, and I have in common?
family
number of energy levels
location of discovery
valence electrons
- 3. Multiple Choice
What is the valence electron count of the alkaline earth metal family?
-2
-1
2
1
- 4. Multiple Choice
The diagram below is the bohr model of an atom. Which best describes this atom?
it has a full outermost shell
it has 6 valence electrons
it has a positive charge
it has 6 electrons
- 5. Multiple Choice
How many valence electrons are in a neutral atom of nitrogen?
5
3
2
15
- 6. Multiple Choice
which two elements have the same number of valence electrons?
C and O
Cl and F
Ga and Ge
Na and Mg
- 7. Multiple Choice
What is the correct lewis dot diagram for Boron?
- 8. Multiple Choice
The alkali metals elements are in the same family in the periodic table because they all have
eight valence electrons
seven valence electrons
two valence electrons
one valence electron
- 9. Multiple Choice
The elements F, Cl, and I are all in the same column on the periodic table. Which is the best explanation for this arrangement.
They have the same number of energy levels
They were all discovered at ancient times
They were all gases at room temperature
they have the same number of valence electrons
- 10. Multiple Choice
Which of the following is a property shared by the elements in the carbon family? (Column IV)
The same electron configuration
The number of valence eletrons
An atomic mass of 12
An atomic number of 6
- 11. Multiple Choice
Elements with the same valence electron configuration can be expected to have similar
chemical reactivity
number of protons
number of electrons
atomic mass
- 12. Multiple Choice
Which element is most similar to potassium (K)
argon
chlorine
phosphorus
sodium
- 13. Multiple Choice
Both calcium and magnesium have the same number of valence electrons. How else can these two elements be the same?
Both elements have the same atomic number
Both elements have the same atomic mass
Both elements are in the same group in the periodic table
Both elements are in the same period on the periodic table
- 14. Multiple Choice
Bob and Tanya study two electron configurations of a neutral atom. What do the two atoms have in common?
Family
Period
Mass number
Atomic number
- 15. Multiple Choice
The diagram represents an element. Which best describes this element?
10 protons and 9 neutrons in the nucleus
9 protons and 9 neutrons in the nucleus
2 electrons in the first energy level; 8 electrons in the second energy level
2 electrons in the first energy level; 7 electrons in the second energy level
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