Electrons Configurations & Periodic Trends

Which electron configuration represents an an element with 6 valence electrons?

• 1s²2s²2p²
• 1s²2s²2p⁶
• 1s²2s²2p⁴
• 1s²2s²2p⁴3s²

Tags

NGSS.HS-PS1-1

What charge will an Oxygen ion have? 

• +1
• -1
• +2
• -2

Which of the following will have a larger radius than Zinc?

• Gallium (Ga)

• Aluminum (Al)

• Magnesium (Mg)

• Strontium (Sr)

Tags

NGSS.HS-PS1-1

Which of the following will have a lower ionization energy than Scandium (Sc)?

• Helium (He)

• Titanium (Ti)

• Calcium (Ca)

• Bromine (Br)

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which statement correctly and completely identifies a trend?

• Atomic radius decreases across a period and increases down a group.
• Electronegativity decreases across a period and decreases down a group.
• Ionization energy increases across a period and increases down a group.
• Ionic radius increases across a period and increases down a group.

Which electron configuration belongs to Copper (Cu)?

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 4d⁸

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 4d⁹

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁹

Tags

NGSS.HS-PS1-1

What is this element? 
[Ne] 3s²3p⁶4s²

• Calcium
• Sodium
• Scandium
• Titanium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Put these in increasing of electronegativity order:

F, N, B

• B , N, F

• B , F , N

• N , F , B

• F , N , B

What element in period 2 has 7 valence electrons?

• Beryllium
• Chlorine
• Magnesium
• Fluorine

Tags

NGSS.HS-PS1-1

What is the attraction of electrons from one element to another when bonded?

• electron affinity

• electronegativity

• ionization energy

• atomic radii

Tags

NGSS.HS-PS1-2