Chem Unit 4

The group number of a specific column of elements tells you what abut them?

• The charge of the ions

• The number of valence electrons they have

• The number of energy levels it has

• The period they belong to

Tags

NGSS.HS-PS1-1

Which of the following elements is in the same period as phosphorous?

• Carbon

• Magnesium

• Nitrogen

• Oxygen

Each period in the periodic table corresponds to a(n) ...

*Think of the bohr model*

• principal energy level

• energy sublevel

• orbital

• suborbital

Tags

NGSS.HS-PS1-1

The modern periodic table is arranged in order of increasing ...

• atomic mass

• atomic charge

• atomic number

• atomic radius

The original periodic table was arranged by increasing ...

• atomic mass

• atomic number

• atomic radius

• atomic charge

How does atomic radius change from top to bottom in a group in the periodic table?

• It tends to decrease

• it tends to increase

• if first increases, then decreases

• it first decreases, then increases.

Who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?

• Henry Moseley

• Antoine Lavoisier

• John Dalton

• Dmitri Mendeleev

Of the elements Pt, Ca, Li, and I, which is a nonmetal?

• Pt

• V

• Li

• I

Which of the following elements is a transition metal?

• cesium

• copper

• tellurium

• tin

Tags

NGSS.HS-PS1-1

The metals in Groups 1A, 2A, and 3A

• gain electrons when they form ions

• all form ions with a negative charge

• all have ions with a 1+ charge

• lose electrons when they form ions