What do the vertical columns in the periodic table indicate?

What do the vertical columns in the periodic table indicate?

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

What is column 1 on the periodic table?

The first column of the periodic table is the alkali metals: lithium, Li; sodium, Na; potassium, K; rubidium, Rb; cesium, Cs; and francium, Fr. The second column of the periodic table is the alkaline earth metals: beryllium, Be; magnesium, Mg; calcium, Ca; strontium, Sr; barium, Ba; and radium, Ra.

What information does the period number on the periodic table give?

period: A horizontal row in the periodic table, which signifies the total number of electron shells in an element’s atom.

What is a column of elements in the periodic table?

In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements. Groups may also be identified using their topmost element, or have a specific name.

What is the biggest group on the periodic table?

Modern periodic table is divided into 7 periods and 18 groups. Group 1(H, Li, Na, K, Rb, Cs, Fr) is the longest group in the periodic table. The first group is called the alkali metals group.

What are the 4 groups of the periodic table?

Definitions of groups, periods, alkali metals, alkaline earth metals, halogens, and noble gases. How metals, non-metals, and metalloids can be identified by the position on the periodic table.

Does Group 4 gain or lose electrons?

Group 4 elements have 4 valence electrons. The non-metals in this family react by gaining 4 extra electrons through the formation of covalent bonds (sharing bonds).

What are the 7 groups in the periodic table?

Periodic Table Groups. The Elements displayed in each Periodic Table Group are either Gas, Liquid or Solid at room temperature and are classified in groups as: Alkali Metals, Alkaline Earth Metals, Transition Metals, Metalloids, Other Metals, Non-metals, Halogens, Noble Gases and Rare Earth Elements.

Are there two main classifications of elements?

There are two main classifications of elements. nonmetals. metals. Group 3A elements are the alkaline earth metals.

What are the 3 classifications of the periodic table?

Three classes of elements are metals, nonmetals, and metalloids.

What are the 3 classification of elements?

Elements can be classified as metals, metalloids, and nonmetals, or as a main-group elements, transition metals, and inner transition metals. Groups are numbered 1–18 from left to right.

What element is in Group 17 and Period 2 of the periodic table?


Term Beryllium Definition 4 Be Group 2 Period 2
Term Chlorine Definition 17 Cl Group 17 Period 3
Term Xenon Definition 54 Xe Group 18 Period 5
Term Bromine Definition 35 Br Group 17 Period 4
Term Neon Definition 10 Ne Group 18 Period 2

What does Group 17 on the periodic table have in common?

Halogens are highly reactive nonmetal elements in group 17 of the periodic table. Halogens are among the most reactive of all elements. They have seven valence electrons, so they are very “eager” to gain one electron to have a full outer energy level.

What is the period 4 halogen?

Bromine (Br) is an element in group 17 (halogen). It does not exist in elemental form in nature. Bromine is barely liquid at room temperature, boiling at about 330 kelvins.

What is the atomic number of element of Period 3 and Group 17 of the periodic table?

Answer. Answer: it’s chlorine and its atomic number is 17.

Which of the following is the most reactive element of the Group 17?


What is the atomic number of element of period and group 17 of the periodic table?

Chlorine – Chlorine has the atomic number 17 and the chemical symbol Cl.

What is the atomic number of elements of Period 3?

Properties of Period 3 Elements

Name of Element (Symbol) Sodium (Na) Sulfur (S)
Atomic Number (Z) 11 16
Electronic Configuration 2,8,1 2,8,6
Atomic Radius (picometers) 186 102
1stIonization Energy (kJ mol-1) 502 1006

What are the first 30 elements?

The first 30 elements of the periodic table and their symbols

Lithium Li
Beryllium Be
Boron B
Carbon C

Why does the third period have 8 elements?

According to the 2n2 rule, the maximum number of electrons in the third period = 2 x (3)2 = 18. But, the last shell cannot accommodate more than 8 electrons so, the number of electrons in third period is 8. Hence, the number of elements is also 8.

Which element in Period 3 of the periodic table is the strongest reducing agent?


Which is the strongest reducing agent?


Which metals are most easily reduced?

In the table provided, the most easily reduced element is Li and the most easily oxidized is iron.

How do you tell which element is most easily oxidized?

The metals at the top of the table are most easily oxidized; that is, they react most readily to form compounds. Any metal on the list can be oxidized by the ions of elements below it. For example, copper is above silver in the series, and therefore, copper can be oxidized by silver ions.

Which metal is easily oxidized is?

How can you tell which metal is oxidized?

Oxidation numbers represent the potential charge of an atom in its ionic state. If an atom’s oxidation number decreases in a reaction, it is reduced. If an atom’s oxidation number increases, it is oxidized.

What is an oxidized element?

An atom is oxidized if its oxidation number increases, the reducing agent, and an atom is reduced if its oxidation number decreases, the oxidizing agent. The atom that is oxidized is the reducing agent, and the atom that is reduced is the oxidizing agent.

How do you find oxidation?

The oxidation number of a free element is always 0. The oxidation number of a monatomic ion equals the charge of the ion. The oxidation number of H is +1, but it is -1 in when combined with less electronegative elements. The oxidation number of O in compounds is usually -2, but it is -1 in peroxides.

How do you know if a reaction is oxidation reduction?

In summary, redox reactions can always be recognized by a change in oxidation number of two of the atoms in the reaction. Any reaction in which no oxidation numbers change is not a redox reaction.

Is oxygen oxidized or reduced?

The oxygen atoms undergo reduction, formally gaining electrons, while the carbon atoms undergo oxidation, losing electrons. Thus oxygen is the oxidizing agent and carbon is the reducing agent in this reaction.