Electron Configuration , Atoms and ions

Atoms or group of atoms with a positive or a negative charge.

• molecules

• ions

• onions

• elements

Smallest particle of substances. Also referred to as the building blocks of matter.

• atoms

• ions

• molecules

• elements

How many electrons can the d sublevel hold?

• 14

• 10

• 2

• 6

How many electrons can the s sublevel hold?

• 14
• 10
• 2
• 6

How many electrons can the p sublevel hold?

• 14
• 10
• 2
• 6

What atom matches this electron configuration?

[Xe] 6s¹ 4f¹⁴ 5d¹⁰

• Mercury

• Gold

• Platinum

• Thallium

The orbital/sublevel FARTHEST from the nucleus in Chromium is

• 4s

• 3d

• 3p

• 1s

What is the name and formula of an element in the 4th period with six electrons in a d sub level

• iron

• titanium

• calcium

• nickel

• copper

Which of the following is an impossible electronic configuration?

• 1s²2s²2p⁵3s²3p⁵

• 1s²2s²2p⁶3s²3p⁶

• 1s²2s²2p⁶2d¹⁰3s²3p⁶

• 1s²2s²2p⁶3s²3p⁶3d⁵

Valence electron is the number of electrons in the outermost energy level of an atom. Which of the following pairs of elements and valence electrons is incorrect?

• Al - 3

• Br - 7

• S - 4

• Sr - 2