Atomic Structure and Periodic Table Practice

How many protons does Fluorine-19 have?

• 19
• 9
• 10
• 18

How many neutrons does a neutral atom of Barium-137 have?

• 56
• 137
• 81
• 94

Tags

NGSS.HS-PS1-8

How many electrons does Chlorine have when it becomes an ion?

• 16
• 17
• 18
• 19

What is the mass number of Sodium-23?

• 23
• 22.99
• 11
• 1

What is the difference between Carbon-12 and Carbon-13?

• Carbon-13 has more neutrons.
• Carbon-13 has more protons.
• Carbon-13 has more electrons.
• Carbon-13 has less protons.

Which element is the alkaline earth metal with 4 rings?

• Magnesium
• Calcium
• Strontium
• Barium

Tags

NGSS.HS-PS1-1

Which element has 4 valence electrons and 5 rings?

• Lead
• Aluminum
• Arsenic
• Tin

Tags

NGSS.HS-PS1-1

What is the correct isotope symbol for an element that has 8 protons and 9 neutrons?

• ⁸O
• ¹⁷O
• ¹⁷F
• ⁹F

What is the atomic mass of Silicon?

• 28.09
• 28
• 14
• 42

What is the atomic number of Boron?

• 5
• 10.81
• 11
• 6