Determine Atomic Structure and Valence Electrons

Front

If an atom has an atomic number of 8 and a mass number of 18, how many neutrons does it have?

Back

10

Answer explanation

To find the number of neutrons, subtract the atomic number from the mass number. Here, mass number (18) - atomic number (8) = 10 neutrons. Thus, the correct answer is 10.

Tags

DOK Level 3: Strategic Thinking

Front

If an atom has an atomic number of 6 and a mass number of 14, how many neutrons does it have?

Back

8

Answer explanation

To find the number of neutrons, subtract the atomic number from the mass number. Here, mass number (14) - atomic number (6) = 8 neutrons. Therefore, the correct answer is 8.

Tags

DOK Level 3: Strategic Thinking

Front

How many protons are in an atom of oxygen?

Back

8

Tags

DOK Level 1: Recall

Front

If an atom has 6 protons, 6 neutrons, and 6 electrons, what is its mass number?

Back

12

Front

Atom with atomic number 15 and mass number 31: How many neutrons?

Back

16

Answer explanation

To find the number of neutrons, subtract the atomic number from the mass number. Here, 31 (mass number) - 15 (atomic number) = 16 neutrons. Therefore, the correct answer is 16.

Tags

DOK Level 3: Strategic Thinking

Front

How many valence electrons does Nitrogen have?

Back

5 valence electrons

Front

How many valence electrons does Neon have?

Back

8 Valence electron

Front

How many valence electrons are in this element?

Back

3

Front

How many electrons are in the outer shell of Sodium (Na)?

Back

1

Front

Element depicted from this orbital diagram: Fluorine, Neon, Chlorine, Argon

Back

Chlorine