Atomic Concepts

Predict the number of valence electrons in an atom of sulfur.

• 4

• 5

• 6

• 7

Tags

NGSS.HS-PS1-1

• 15 protons, 16 neutrons, 15 electrons

• 15 protons, 15 neutrons, 16 electrons

• 16 protons, 15 neutrons, 15 electrons

• 15 protons, 16 neutrons, 16 electrons

• Ground state

• Excited state

• Cannot be determined

• Both ground and excited state

Tags

NGSS.HS-PS1-2

Explain how the concept of electronegativity can be used to predict the type of bond formed between two atoms.

• Electronegativity differences determine if a bond is ionic or covalent.

• Electronegativity determines the number of bonds an atom can form.

• Electronegativity is not related to bond type.

• Electronegativity only affects metallic bonds.

Tags

NGSS.HS-PS1-1

Using the periodic table, predict the most likely charge of an ion formed by an atom of aluminum.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Evaluate the stability of an isotope with 92 protons and 146 neutrons. Is it likely to be stable or radioactive?

• Stable

• Radioactive

• Cannot be determined

• Both stable and radioactive

Tags

NGSS.HS-PS1-8

What is the electron configuration for a neutral atom of neon?

Tags

NGSS.HS-PS1-1

How many valence electrons does a nitrogen atom have?

• 3

• 4

• 5

• 6

Tags

NGSS.HS-PS1-1

Which element has the lowest electronegativity?

• Fluorine

• Cesium

• Oxygen

• Chlorine

• 35.5 amu

• 36.0 amu

• 35.0 amu

• 36.5 amu