periodic table & valence electron

The periodic table is arranged primarily by increasing.

atomic number

The atomic number represents the number of

protons

Elements in the same group (family) have the same

number of valence electrons

Which group contains the alkali metals?

Group 1

How many valence electrons does oxygen have?

6

Which element has one valence electron?

Sodium

Elements in Group 18 are known as

Noble gases

Noble gases are generally unreactive because they

have full valence shells

Which element is a halogen?

Fluorine

How many valence electrons does carbon have?

4

The elements in the middle of the periodic table are called

transition metals

Which element has a full valence shell?

Neon

Elements in Group 2 typically have how many valence electrons?

6

Metals are generally

good conductors

Which of the following is a metalloid?

Silicon

Valence electrons are found in the

outermost shell

Which element has 7 valence electrons?

Chlorine

The reactivity of an element is most closely related to its

valence electrons

Which element is most likely to react with sodium?

Chlorine

What do elements in the same period (row) share?

number of shells

How many valence electrons does magnesium have?

2

Which group is most reactive for metals?

Group 1

Which element is a metal?

Iron

Elements gain or lose electrons to

achieve a full valence shell

Which element is in Period 3 and Group 1?

Sodium

The staircase line on the periodic table separates

metals and nonmetals

Which element has 3 valence electrons?

Boron

Nonmetals are generally

good conductors

How many valence electrons does neon have?

6

Which property helps predict how an element will bond?

valence electrons

1,Elements with full outer shells

2, Vertical column on the periodic
table

3, Horizontal row on the periodic

table

4, Electrons involved in bonding

5,Highly reactive metals in Group 1

1. Valence electrons

2. Noble gases

3. Alkali metals

4. Period

5. Group