Question

Which element has two valence electrons?(1 point)
Responses

lithium
lithium

calcium
calcium

chlorine
chlorine

neon
Based on its position in the periodic table, which element would have seven valence electrons? (1 point)
Responses

chlorine
chlorine

nitrogen
nitrogen

silicon
silicon

sodiumWhich phrase describes a valence electron?(1 point)
Responses

an electron in the outer energy level of an atom
an electron in the outer energy level of an atom

an electron that has been removed from an atom
an electron that has been removed from an atom

any negatively charged particle in an atom
any negatively charged particle in an atom

an electron in the innermost orbit of an atom
Which phrase best describes a period on the periodic table?(1 point)
Responses

a row of elements
a row of elements

elements that are in the same group
elements that are in the same group

a column of elements
a column of elements

elements that have the same number of electrons
Which two elements have the same number of energy levels with electrons in them?(1 point)
Responses

boron and oxygen
boron and oxygen

lithium and francium
lithium and francium

krypton and neon
krypton and neon

neon and sodium

Answer 1

Here are the answers to your questions:

1. **Which element has two valence electrons?**
- **Calcium**

2. **Based on its position in the periodic table, which element would have seven valence electrons?**
- **Chlorine**

3. **Which phrase describes a valence electron?**
- **An electron in the outer energy level of an atom**

4. **Which phrase best describes a period on the periodic table?**
- **A row of elements**

5. **Which two elements have the same number of energy levels with electrons in them?**
- **Krypton and neon**

Let me know if you need further assistance!