Periodic Trends

Front

How many valence electrons are there in Helium (He)?

Back

2

Front

Which is NOT a metal?

Cu

,

Na

,

Br

,

Mg

Back

Br

Front

The number of valence electrons can be determined by the element's...
Options: atomic number, group number, period number, mass number

Back

group number

Front

In a Lewis Dot Structure of Iodine (I), how many dots should there be?

Back

7

Front

The number of energy levels an element has depends on its...
Options: group number, period number, atomic number, mass number

Back

period number

Front

All are semi-metals except for...
Options: Si, Al, Te, Sb

Back

Al

Front

Which of the following is NOT a non-metal?

O

,

S

,

F

,

Ra

Back

Ra

Front

Elements to the left of the staircase on the periodic table are mainly...

Back

metals

Front

How many valence electrons does Calcium (Ca) have?

Back

2

Front

Hydrogen has 1 valence electron and is a metal.

Back

False