Lewis Structures and Ions

According to the octet rule most elements (except hydrogen, helium, lithium and beryllium that prefer to have 2 valence electrons) need _______ valence electrons.

• 2

• 8

• 6

• 18

Chlorine has _____ valence electrons.

• 5

• 6

• 7

• 8

How many valence electrons should Lithium have around its Lewis dot structure?

• 1

• 2

• 3

• 4

How many valence electrons should Barium have around its Lewis dot structure?

• 1

• 2

• 3

• 4

This is the correct dot diagram for sodium (Na)

• true
• false

Tags

NGSS.MS-PS1-1

This is the correct dot diagram for nitrogen (N)

• true
• false

Tags

NGSS.MS-PS1-1

Negatively charged ions are called _____ while positively charged ions are called _____. Cations are formed from ______.

• anions, cations, metals

• anions, cations, non-metals

• cations, anions, metals

• cations, anions, non-metals

What is the name of the group that never reacts-- they are stable with a full outermost energy level of s and p orbitals.

• noble gases

• transition

• halogens

• alkali metals

The period for Bromine is ___________. Bromine's electron configuration is _____________.

• 3, [Ne] 3s²3p⁵

• 2, [He] 2s²2p⁵

• 4, [Ar] 4s²4p⁵

Chose the Lewis dot structure and predict the ion charge that would form for this element: [Ne] 3s¹

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