c. how many electrons does it have?
10. compare sodium (na) and chlorine (cl) using the periodic table:
- which one is metal?
- which one is nonmetal?
- when combined, what type of compound do they form?
11. explain why elements in the same group (like lithium, sodium, potassium) react in similar ways.
12. imagine you discovered a new element with 3 protons.
- what would this element’s name be?
- which group/family would it belong to?
bonus challenge

Question

Accepted Answer

### Question 10
#### Part 1: Which one is metal?
# Brief Explanations:
Metals are typically found on the left side and middle of the periodic table. Sodium (Na) is in Group 1 (alkali metals), which are metals. Chlorine (Cl) is in Group 17 (halogens), non - metals.
# Answer:
Sodium (Na)

#### Part 2: Which one is nonmetal?
# Brief Explanations:
Non - metals are often on the right side of the periodic table (except for hydrogen). Chlorine (Cl) is a halogen in Group 17, characterized as a non - metal, while Na is a metal.
# Answer:
Chlorine (Cl)

#### Part 3: When combined, what type of compound do they form?
# Brief Explanations:
Sodium (a metal) and Chlorine (a non - metal) react to form an ionic compound. Metals tend to lose electrons and non - metals gain electrons, resulting in the formation of ions that are held together by ionic bonds. The compound formed is sodium chloride (NaCl), an ionic compound.
# Answer:
Ionic compound (Sodium Chloride is an ionic compound)

### Question 11
# Brief Explanations:
Elements in the same group of the periodic table have the same number of valence electrons. Valence electrons are the electrons in the outermost energy level of an atom and are responsible for an element's chemical reactivity. Lithium, sodium, and potassium are in Group 1, each having 1 valence electron. Since chemical reactions involve the interaction of valence electrons, elements with the same number of valence electrons (same group) will react in similar ways as they have the same tendency to gain, lose, or share electrons to achieve a stable electron configuration.
# Answer:
Elements in the same group have the same number of valence electrons, and valence electrons determine chemical reactivity, so they react similarly.

### Question 12
#### Part 1: What would this element’s name be?
# Brief Explanations:
The number of protons in an atom is equal to its atomic number. An element with 3 protons has an atomic number of 3. Looking at the periodic table, the element with atomic number 3 is lithium.
# Answer:
Lithium

#### Part 2: Which group/family would it belong to?
# Brief Explanations:
Lithium (atomic number 3) has an electron configuration of 2,1, meaning it has 1 valence electron. Elements with 1 valence electron are in Group 1 (the alkali metal group).
# Answer:
Group 1 (Alkali metals)

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Question 10

Part 1: Which one is metal?

Answer:

Part 2: Which one is nonmetal?