Atomic Structure

Identify the element.

• Ar

• Mg

• K

• Cl

Tags

NGSS.MS-PS1-1

According to the periodic table, how many neutrons does an atom of fluorine contain?

• 9

• 10

• 19

• 29

Which of the following BEST describes the structure of an atom.

• The nucleus is the dense center of the atom composed of protons and neutrons. Surrounding the nucleus is an electron cloud composed of electrons.

• The nucleus is the dense center of the atom composed of electons and neutrons. Surrounding the nucleus is an electron cloud composed of protons.

• The electron cloud is the dense center of the atom composed of electrons. Surrounding the electron cloud is the a nucleus composed of protons and neutrons.

• The electron cloud is the dense center of the atom composed of protons and neutrons. Surrounding the electron cloud is a nucleus composed of electrons.

What type of charge does a proton have?

• Positive

• Negative

• Neutral

Which of the following correctly identifies the overall charge of an unreacted atom?

• positive

• negative

• neutral

• it fluctuates

An unknown element is a gas at room temperature, has 8 valence electrons, and 22 neutrons. The element is most likely ______.

• F

• Ne

• Ar

• Kr

What is the correct electron arrangement for phosphorus?
YOU WILL HAVE TO DRAW A BOHR MODEL TO FIGURE IT OUT!

• 2-8-6

• 2-8-2

• 2-8-4

• 2-8-5

Electrons have what type of charge?

• Positive

• Negative

• Neutral

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

How many neutrons does Tellurium have?

• 76

• 56

• 66

• 86

Tags

NGSS.MS-PS1-1

The atomic number tells us how many _____________ and atom has.

• protons

• neutrons

• electrons

• energy levels