AC1.8 Valence electrons and Ionic Compounds

Multiple Choice

According to the octet rule, atoms react with each other in order to attain _ electrons in their outermost energy level or shell.

• 2

• 4

• 6

• 8

• 10

Multiple Choice

Which of the following elements loses one electron in order to attain an octet?

• potassium

• calcium

• helium

• boron

• fluorine

Multiple Choice

Which atom is likely to gain one electron in order to attain an octet?

• sodium

• helium

• iodine

• chlorine

Multiple Choice

Which atom will likely gain three electrons in order to attain an octet?

• nitrogen

• lithium

• aluminum

• oxygen

Multiple Choice

Each elements will gain electrons to attain an octet except

• potassium

• fluorine

• oxygen

• hydrogen

Multiple Choice

What is the condensed configuration for the sulfur atom?

• [Ar]3p⁴

• [He]3s²3p⁴

• [Ne]3s²3p⁴

• [Na]3s²3p⁴

Multiple Choice

What is the electron configuration for this atom?

• 1s²2s²2p⁶

• 1s²2s²2p⁵

• 1s²2s²2p³

• 2s²2p³

Drag and Drop

Anions are ​

Placeholder

elements that form ​

Placeholder

ions and ​

Placeholder

electrons.

Drag these tiles and drop them in the correct blank above

non-metal

negative

lose

metal

metalloid

gain

positive

Multiple Choice

What atom matches this electron configuration?
1s²2s²2p⁶3s²

• Neon

• Magnesium

• Aluminum

• Potassium

Multiple Choice

What anion matches this electron configuration?
1s²2s²2p⁶3s²

• Al^-

• Na^-

• Mg

• Ne^-

Multiple Choice

What is the electronic configuration of iron?

• 1s²2s²2p⁶3s²3p⁶4s²3d⁶

• 1s²2s²2p⁶3s²3p⁶3d⁸

• 1s²2p⁶3s²3p⁶4s²3d⁶

• 1s²2s²2p⁶3s²3p⁶4s¹3d⁶

Multiple Choice

What is the chemical formula for calcium bromide if Ca²⁺ + Br^- forms the ionic compound?

• CaBr₂

• Ca₂Br

• CaBr

• CaBr₃

Multiple Choice

What is the chemical formula for aluminum chloride if Al³⁺ + Cl^- forms the ionic compound?

• Al₃Cl

• AlCl

• AlCl₃

• Al₃Cl₃

Multiple Select

Which groups tend to not form ions? Check all that apply.

• 1

• 14

• 13

• 17

• 18

Multiple Choice

Which type of bond transfers electrons?

• ionic

• covalent

• metallic

Multiple Choice

This type of solid forms a regular repeating three-dimensional structure called a crystal lattice.

• amorphous

• crystalline

• glass

• diamond

Multiple Choice

In amorphous solids, the atoms or molecules are held together in a completely random formation.

• true

• false

Multiple Choice

Which of the following is true of solids?

• All solids have a crystalline structure.

• All solids maintain a defined shape and size if conditions remain constant.

• All solids have a lattice structure at the atomic level.

Multiple Choice

One major difference between crystalline and amorphous solids is that

• crystalline solids have a precise melting point.

• amorphous solids have a lattice structure.

• amorphous solids always behave consistently and uniformly.

• crystalline solids break unpredictably and can produce curved fragments.

Multiple Choice

1. Atoms of an element, Y, have the electronic configuration 1s²2s²2p⁶3s²3p⁵. The compound most likely formed with sodium, Na, is:

• Na₂Y

• NaY

• Na₃Y₂

• NaY₂

Multiple Choice

1. Atoms of an element, Z, have the electronic configuration 1s²2s²2p⁴. The compound most likely formed with oxygen, O, is:

• O₂Z

• OZ

• OZ₂

• OZ₄