Isotopes! Becker

What is the total number of neutrons in an atom of O-18?

• 18

• 16

• 10

• 8

The most common isotope of chromium has a mass number of 52. Which notation represents a different isotope of chromium?

• ⁵²₂₄Cr

• ⁵⁴₂₄Cr

• ²⁴₅₂Cr

• ²⁴₅₄Cr

Tags

NGSS.MS-PS1-1

What is the total number of neutrons in an atom of ⁵⁷₂₆Fe?

• 26

• 31

• 57

• 83

Which diagram represents the nucleus of an atom of ²⁷₁₃Al?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

What is the total number of neutrons in an atom of an element that has a mass number of 19 and an atomic number of 9?

• 9

• 10

• 19

• 28

Tags

NGSS.MS-PS1-1

The nucleus of an atom of K-42 contains

• 19 protons and 23 neutrons

• 19 protons and 42 neutrons

• 20 protons and 19 neutrons

• 23 protons and 19 neutrons

Tags

NGSS.HS-PS1-8

Which symbol represents an isotope of carbon?

• ⁶₄X

• ¹²₅X

• ¹³₆X

• ¹⁴₇X

Tags

NGSS.MS-PS1-1

An atom of carbon-14 contains

• 8 protons, 6 neutrons, and 6 electrons

• 6 protons, 6 neutrons, and 8 electrons

• 6 protons, 8 neutrons, and 8 electrons

• 6 protons, 8 neutrons, and 6 electrons

Tags

NGSS.MS-PS1-1

Which atom contains exactly 15 protons?

• phosphorus-32

• sulfur-32

• oxygen-15

• nitrogen-15

What is the total number of neutrons in an atom of ¹⁹₉F?

• 9

• 10

• 19

• 28

Tags

NGSS.MS-PS1-1