Elements and the Periodic Table Review

All elements after atomic number ____ , Tc and Pm are synthetic.

How many significant figures should be in the answer: 25 g/505 mL ?

Which is a property of copper?

Which of the following is a property of a metalloid?

Vertical columns in the periodic table are called

Zeros after nonzero numbers in a whole number are significant.

How many significant figures are in the measurement 0.0500 L?

All of the following are properties of nonmetals EXCEPT

The elements to the left of the staircase line are

The classification of Cl, chlorine is____

The oxidation number of fluorine is

Horizontal rows in the periodic table are called

The elements that border the staircase line are

How many significant figures are in the measurement 5.000 L?

Which of the following elements is a metalloid?

How many significant figures are in the measurement 5005 L?

Flourine needs ____ more electron(s) to complete its highest energy level octet.

Flourine has ____ valence electrons.

All synthetic elements are

All elements after atomic number ____ are radioactive.

The answer rounded to correct sig. figs. (7.767 cm x 3.50 cm = 27.1845 cm² )

The oxidation number of Group 2, alkaline earth metals is______.

The family (group) of Cl, chlorine is____

How many significant figures are in the measurement 5000 L?

Group 2, alkaline earth metals, have ______ valence electrons.