Ions and Isotopes

What is a representation of an ion?

• Li

• Na-22

• O^-2

How many neutrons are in an atom of carbon-14?

• 6

• 8

• 10

• 14

Tags

NGSS.MS-PS1-1

How many protons does this isotope of titanium have?

• 22

• 26

• 48

• 70

Tags

NGSS.MS-PS1-1

How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?

• 2

• 34

• 36

• 40

Tags

NGSS.MS-PS1-1

Write the hyphen notation for the isotope that has 39 protons and 50 neutrons.

• Yttrium-11

• Yttrium-39

• Yttrium-50

• Yttrium-89

If X is the symbol for an element, which of the following two symbols represent    isotopes of the same element?     I. ⁷⁷₃₅X  II. ⁷⁷₃₃X  III. ⁸¹₃₇X  IV. ⁸¹₃₅ X

• I and II
• III and IV
• I and IV
• I and III

Tags

NGSS.HS-PS1-8

Negative ions are called

• Cations
• Electrons
• Anions
• Neutrons

When an atom loses a valence electron, it becomes a(n) _____________ ion.

• positive
• negative
• neutral
• polyatomic

Tags

NGSS.HS-PS1-2

Positive ions form when atoms _________ valence electrons.

• lose
• gain
• share
• gain or share

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

How many protons are in this element?

• 79
• 196
• 117
• Cannot be determined

Tags

NGSS.MS-PS1-1