Elements

Question 1

It is a pure substance that consists only one type of atom.

Answer 1

Element

Question 2

How many elements are there in the periodic table?

Answer 2

118 elements

Question 3

The father of the modern periodic table

Answer 3

Dmitri Mendeleev

Question 4

It is an institute that defines and names scientific elements of the periodic table.

Answer 4

International Union of Pure and Applied Chemistry (IUPAC)

Question 5

_________ is a horizontal arrangement in which each element in a specific arrangement has the same number of electron shells.

Answer 5

Periods or series

Question 6

A ______ is a vertical arrangement in which each element in a specific arrangement has the same number of valence electrons.

Answer 6

Group

Question 7

________ are found in the outermost orbital of an atomic structure.

Answer 7

Valence electrons

Question 8

These group in the periodic table is highly reactive.

Answer 8

Alkali and alkali earth metals

Question 9

This group in the periodic table has high melting and boiling points.

Answer 9

Transition metals

Question 10

This group in the periodic table is fairly reactive.

Answer 10

Icosagens

Question 11

This group in the periodic table is not very reactive.

Answer 11

Crystallogens

Question 12

In this group, reactivity varies for each element.

Answer 12

Pnictogens

Question 13

This group is also called as the oxygen group.

Answer 13

Chalcogens

Question 14

This group is highly reactive with metals.

Answer 14

Halogens

Question 15

This group is the least reactive of all the elements because of their complete valence electrons.

Answer 15

Noble gases

Question 16

The study of the origin of words and the way in which their meanings have changed throughout history.

Answer 16

Etymology