Elements, isotopes, and ions

Which of the following is a cation?

• Si⁴⁺
• Ti-48
• Co
• Ag^-

Tags

NGSS.HS-PS1-1

If you had an atom of Neon-11 and it suddenly lost a proton what would it become (ignore any charges)?

• Neon-10
• Fluorine-11
• Fluorine-10
• Neon-11

Tags

NGSS.HS-PS1-8

How many electrons does S^2- have?

• 2
• 14
• 16
• 18

Tags

NGSS.HS-PS1-1

• 38
• 42
• 80
• 118

Tags

NGSS.HS-PS1-8

How many electrons does Ba²⁺ have?

• 2
• 54
• 56
• 58

Tags

NGSS.HS-PS1-1

You have an element with an atomic number of 15 and an atomic mass of 32, what isotope is it?

• Phosphorus-32
• Phosphorus-15
• Germanium-15
• Germanium-32

Tags

NGSS.HS-PS1-8

Describe the number of protons and electrons in Fe²⁺.

• 26 protons 24 electrons
• 26 electrons 24 protons
• 26 protons 28 electrons
• 28 protons 26 electrons

Tags

NGSS.HS-PS1-1

How many electrons does Si⁴⁺ have?

• 4
• 10
• 14
• 18

Tags

NGSS.HS-PS1-1

How many electrons does Al³⁺ have?

• 2
• 3
• 8
• 10

Tags

NGSS.HS-PS1-1

How many electrons can fit in the first and second energy levels?

• 2 in the first and 2 in the second
• 2 in the first and 8 in the second
• 8 in the first and 8 in the second
• 2 in the first and 10 in the second

Tags

NGSS.MS-PS1-1