Lewis Dot Structure, Ionic Bonding, Naming Ionic Compounds

How many valence electrons does Carbon have

(a)  

Answer explanation

Carbon is in group 14=group 4, so 4 valence electrons!

Tags

NGSS.HS-PS1-1

How many valence electrons does Argon have

(a)  

Answer explanation

Group 18= Group 8, 8 valene electrons.

Tags

NGSS.HS-PS1-1

Which of the elements in the picture has correct electron dot notation?

• 1

• 2

• 3

• 4

Answer explanation

Put one on each side--you can't double up before each side has one.

Tags

NGSS.HS-PS1-1

Which of the following could NOT form an ionic compound? (Choose 2)

• Li⁺ and Cl^-

• F^- and O^2-

• Ba²⁺ and Ag⁺

• Mg²⁺ and S^2-

Answer explanation

Ionic compounds are between a metal and a nonmetal.

Tags

NGSS.HS-PS1-2

Which of the following could form an ionic compound? (Choose 2)

• Na⁺ and F^-

• S^2- and O^2-

• Ca²⁺ and Fe³⁺

• Mg²⁺ and Cl^-

Answer explanation

Ionic compounds are between metals and nonmetals!

Which element(s) will lose valence electrons to form an ion? (Choose 2)

• Phosphorus

• Iron

• Barium

• Neon

Answer explanation

Metals will lose electrons to form ions!

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Name the following ionic compound: BeCl₂

• beryllium chlorine

• beryllium II chloride

• beryllium chloride

• beryllium dichloride

Answer explanation

Berylium = Be⁺²

2 Chlorine = 2Cl^-

Which of the following is an ionic compound:

• CH₄

• I₂

• LiBr₂

• CO

Answer explanation

You need a metal and a nonmetal to be an ionic compound.

Name the following ionic compound: NaF

• nitrogen fluorine

• sodium fluoride

• nitrogen fluoride

• sodium fluorine

Answer explanation

Na⁺¹= Sodium

F^-1= Fluoride

Name this compound: 
KF

• Potassium fluoride

• Potassium fluorite

• Fluorine potasside 

• Potassium fluorate

Answer explanation

K⁺= Potassium

F^-=Fluoride