What is the number of valence electrons in a Y atom?

• 1

• 2

• 6

• 7

Which of the following statements does not describe an inert gas?

• Its outermost shell is filled completely with electrons

• It cannot accept, lose or share electrons

• It exists as a monoatomic gas

• It can only form bonds with one another

Which pair of formula and the type of compounds is correct?

• XY Ionic compound

• X₂Y Covalent compound

• XY₂ Covalent compound

• XY₄ Ionic compound

The proton number of element P is 13 while element Q is located in Period 2 and Group 16 of the Periodic Table of Elements. Which type of compound is formed between atom P and atom Q?

• Ionic compound

• Covalent compound

• Positive compound

• Metal

The electron arrangement of atom P is 2.8.2 and the electron arrangement of atom Q is 2.6. Elements P and Q react to form a compound. Which of the following statements about the reaction is correct

• Atom Q donates 2 electrons

• Atom P donates 1 electron

• Atom Q accepts 2 electrons

• A covalent compound is formed

Element Y reacts with oxygen to form an ionic compound. Which of the following can be element Y?

• Silicon

• Magnesium

• Phosphorus

• Chlorine

Ionic bonds are between...

• nonmetals and nonmetals
• carbon and oxygen
• metals and nonmentals
• hydrogen and chlorine

Covalent bonds are between...

• two or more nonmetals
• sodium and chlorine
• metals and metals
• metals and nonmetals

Tags

NGSS.MS-PS1-1

What kind of chemical bond forms between a metal and a nonmetal?

• ionic
• covalent
• fake
• metallic

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What kind of bond forms between two nonmetals?

• ionic 
• covalent
• metallic
• fake

Tags

NGSS.HS-PS1-1