Question: Which Is Shortest Period?

Which period is the shortest name the element in this period?

The first period of the periodic table is the shortest period of the periodic table and contains 2 elements.

The sixth period period of the periodic table is the longest period of the periodic table and contains 32 elements..

How many elements are there in third period?

eight elementsThe third period contains eight elements: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon. The first two, sodium and magnesium, are members of the s-block of the periodic table, while the others are members of the p-block.

What are short periods in periodic table?

Short periods are the second and third period of Periodic table of the elements. They are called short because there are only eight elements in each.

How many elements are there in 6th period?

32 elementsThe sixth period contains 32 elements, tied for the most with period 7, beginning with caesium and ending with radon.

What is Group 15 called?

Nitrogen group element, any of the chemical elements that constitute Group 15 (Va) of the periodic table. The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), bismuth (Bi), and moscovium (Mc).

What is the cause of periodicity in properties?

The cause of periodicity is the elements of same group have similar prorperties if they are arranged in increasing atomic number.

Which is the shortest and longest period in the periodic table?

I) First period is the shortest and sixth period is the longest period. II) 4th and 5th periods are short periods.

Which is the longest period?

Thus, 6th and 7th periods are called the longest period in the periodic table as it contains 32 elements in it because of inner transition elements.

How many periods are called short periods?

The first three periods are called short period.

Why is 7th period incomplete?

7th period is considered incomplete because it consists of elements which have not been studied properly yet. … Thus, we can’t give them a permanent recognition as all the elements in the periodic table have many properties and similarities to follow.

Which group is called Chalcogens?

The chalcogens (/ˈkælkədʒɪnz/) are the chemical elements in group 16 of the periodic table. This group is also known as the oxygen family. It consists of the elements oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and the radioactive element polonium (Po).

How many elements are there in 7th period?

32 elementsThe seventh period contains 32 elements, tied for the most with period 6, beginning with francium and ending with oganesson, the heaviest element currently discovered. As a rule, period 7 elements fill their 7s shells first, then their 5f, 6d, and 7p shells in that order, but there are exceptions, such as uranium.

Why is Group 16 called Chalcogens?

The group 16 elements of modern periodic table consist of 5 elements oxygen, sulphur, selenium, tellurium and polonium. The elements in this group are also known as the chalcogens or the ore-forming elements because many elements can be extracted from the sulphide or oxide ores.

Why is Group 15 called Pnictogens?

Group 15 elements are also known as pnictogens because in Greek pigeon means to cholk or stifle. In the absence of the oxygen, molecular nitrogen has this property.

What is Period 7 called?

Period 7 Elements: The Actinides.

Is 7th period complete?

4 New Elements Are Added To The Periodic Table : The Two-Way With the discoveries now confirmed, “The 7th period of the periodic table of elements is complete,” according to the International Union of Pure and Applied Chemistry.

How many periods and groups are in the Mendeleev periodic table?

Mendeleev divided his periodic table in eight groups and seven periods.

How many periods are called short periods give their period numbers and name at least one element of each period?

Answer. there are three periods in the periodic table that called short period they are 1 2 and 3 because they contain only 2 and 8 elements in there period. (1) there periodic number are between 1 to 18. (2) in first period there are only two elements but in 2nd and 3rd period have 8 elements each period.