Atomic Structure Quiz

The symbol that represents 16 protons, 18 neutrons, and 18 electrons would be:

Tags

NGSS.MS-PS1-1

Compared to one atom of cobalt−59, one atom of iron−58 contains the same number of which subatomic particle?

• protons

• neutrons

• electrons

• particles in the nucleus

• 20

• 40

• 18

• 22

Read the statement below:

The element had 6 valence electrons and gained two electrons to form an anion with a -2 charge.

Which of the following could be used as evidence/reasoning to support the claim in the original statement?

• The element gained two electrons to empty the outer shell.

• The element gained two electrons to completely fill the outer shell with eight electrons.

• The statement is incorrect because the element would lose six electrons.

• The statement is incorrect because the element would gain electrons to form a +2 cation.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following Bohr models could be the correct model of a neutral atom of Nitrogen?

• I

• II

• III

• IV

Tags

NGSS.MS-PS1-1

What do nitrogen, oxygen, and fluorine all have in common? (Select all that apply.)

• They are all metals.

• They are all nonmetals.

• They all have the same number of valence electrons.

• They all have the same number of protons.

• Their valence electrons are located in the same energy level.

Which element is located in group 2 and period 6 of the periodic table?

• Molybdenum (Mo)

• Radium (Ra)

• Tungsten (W)

• Barium (Ba)

What is the name of the group shown?

• Alkali Metals

• Alkaline Earth Metals

• Transition Metals

• Noble Gases

Which of the following statements describes the elements in group 16 of the periodic table?

• They are all gases at room temperature.

• They have 6 valence electrons.

• They commonly exist as cations in nature.

• They combine easily with elements in group 17.

An atom of potassium has 19 protons and 20 neutrons. What is its mass number?

• 19

• 20

• 39

• 10