Electron Dot Notation

Which of these is incorrect?

• 
• 

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What are valence electrons?

• The total number of electrons in an atom

• The number of electrons in the outermost shell

• The number of electrons in the second shell

• The number of protons in the outermost shell

What are the elements (Be, Mg, Ca,...) in Group 2 called?

• Alkali metals

• Alkaline earth metals

• Halogens

• Noble Gases

Elements that have atoms with full valence shells in the ground state are in

• Group 1

• Group 2

• Group 17

• Group 18

Tags

NGSS.HS-PS1-1

Most elements will gain or lose electrons so that they end up with _______ valence electrons.

• 2
• 6
• 8
• 10

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

This could be the dot diagram of an element with the atomic number

• 8

• 31

• 19

• 36

How do positive ions form?

• by gaining electrons
• getting compliments
• by losing electrons
• gaining more protons

This could be the dot diagram of 

• Ne
• Si
• Al
• Be

Tags

NGSS.HS-PS1-1

How many electrons should Beryllium have around its Lewis dot model?

• 1
• 2
• 3
• 4

How many electrons should Carbon have around its Lewis dot model?

• 1
• 3
• 4
• 5