Valence Electrons and Ions

What is the charge of ion "X" in CaX?

• +1

• -1

• +2

• -2

Nitrogen will form which of the following ions?

• N

• N^-3

• N^-5

• N⁺⁵

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In the chemical formula for an ionic compound, which item is written first?

• positive ion

• negative ion

• subscript

• the female

Which of the following describes a valence electron?

• Outermost from nucleus

• Most energetic

• Determines chemical properties and bonding

• All of the above

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons are every atom trying to obtain?

• 2

• 4

• 6

• 8

Atoms with few valence electrons (1-3) tend to do what with them?

• Lose them

• Gain more

• Do nothing

Match the following valance electron trends to their correct response.

• More valence electrons (5-7)

• Lose them

• 4 valence electrons

• Gain them

• Few valance electrons (1-3)

• Lose or Gain

• 8 valence electrons

• Keep them

Tags

NGSS.HS-PS1-2

Which of the following elements will have 5 valence electrons?

• In

• Ge

• Sb

• Rn

• Cs

How many electrons should sodium, atomic number 11, have around its Lewis dot model?

• 1

• 2

• 3

• 4

How many valence electrons should Magnesium have in its Lewis dot model?

• 1

• 2

• 3

• 4