Periodic Table: Organization, Trends, and Properties

Question 1

Which statement about the Periodic Table is incorrect?

Accepted Answer

The atomic masses in the Periodic Table are expressed in kilograms.

Answer

Elements in a period have the same number of electron shells.

Answer

Elements in a group share similar chemical properties.

Answer

The Periodic Table can be used to predict an element's reactivity.

Question 2

An element with an atomic number of 17 would be located in which group of the Periodic Table?

Accepted Answer

Group 17

Answer

Group 1

Answer

Group 13

Answer

Group 18

Question 3

Of the elements sodium, chlorine, potassium, and fluorine, which has the highest electronegativity?

Accepted Answer

Fluorine

Answer

Sodium

Answer

Chlorine

Answer

Potassium

Question 4

An element in Period 4 with 6 valence electrons would belong to which family of the Periodic Table?

Accepted Answer

Chalcogens

Answer

Alkali metals

Answer

Halogens

Answer

Noble gases

Question 5

Which of the following is a metalloid?

Accepted Answer

Carbon

Answer

Magnesium

Answer

Sulfur

Answer

Iron

Question 6

The Periodic Table is organized into groups and periods based on the arrangement of:

Accepted Answer

Electrons

Answer

Protons

Answer

Neutrons

Answer

Nucleons

Question 7

Which of the following elements would have the largest atomic radius?

Accepted Answer

Potassium

Answer

Helium

Answer

Lithium

Answer

Sodium

Question 8

Which of the following is NOT a property of noble gases?

Accepted Answer

Highly reactive

Answer

Colorless

Answer

Odorless

Answer

Monatomic

Question 9

Which element, located in Group 17 (Halogens) of the Periodic Table, is highly reactive and forms diatomic molecules?

Accepted Answer

Fluorine

Answer

Lithium

Answer

Sodium

Answer

Chlorine

Question 10

In which period of the Periodic Table are the elements with the greatest number of electron shells located?

Accepted Answer

Period 7

Answer

Period 1

Answer

Period 2

Answer

Period 3

Question 11

Which element is most likely to lose an electron and form a positively charged ion due to its low ionization energy?

Accepted Answer

Sodium

Answer

Fluorine

Answer

Oxygen

Answer

Nitrogen

Question 12

Which element exhibits the strongest attraction for electrons due to its high electronegativity?

Accepted Answer

Fluorine

Answer

Lithium

Answer

Carbon

Answer

Phosphorus

Question 13

Which pair of elements correctly represents a metal and a non-metal, respectively, based on their position in the Periodic Table?

Accepted Answer

Sodium and Chlorine

Answer

Lithium and Fluorine

Answer

Calcium and Potassium

Answer

Boron and Oxygen

Question 14

Which of the following elements belongs to the transition metal group, characterized by partially filled d orbitals?

Accepted Answer

Iron

Answer

Chlorine

Answer

Oxygen

Answer

Silicon

Question 15

Which element exhibits properties of both metals and non-metals, and is commonly used in semiconductors?

Accepted Answer

Boron

Answer

Sodium

Answer

Aluminium

Answer

Iron

Question 16

The primary purpose of arranging elements in the Periodic Table is to:

Accepted Answer

Group elements with similar chemical properties together

Answer

List elements in order of their atomic masses

Answer

Categorize elements based on their physical states

Answer

Rank elements according to their reactivity

Question 17

How does the first ionization energy (IE) of elements vary across a period in the Periodic Table?

Accepted Answer

IE increases due to increasing effective nuclear charge.

Answer

IE decreases from left to right.

Answer

IE remains constant across a period.

Answer

IE shows an irregular pattern with no discernible trend.

Question 18

In the Periodic Table, the group numbers are assigned based on:

Accepted Answer

The number of electrons in the outermost energy level

Answer

The number of protons in the nucleus

Answer

The atomic mass

Answer

The total number of electrons

Question 19

Which of the following elements has the highest electronegativity?

Accepted Answer

Fluorine

Answer

Potassium

Answer

Barium

Answer

Chlorine

Question 20

The element with the smallest atomic radius is:

Accepted Answer

Lithium

Answer

Sodium

Answer

Chlorine

Answer

Potassium

Question 21

Which of the following is the noble gas with the highest ionization energy?

Accepted Answer

Helium

Answer

Neon

Answer

Argon

Answer

Krypton

Question 22

An element X has the following electron configuration: 1s²2s²2p⁶3s²3p⁶4s¹. What group and period does element X belong to?

Accepted Answer

Group 1, Period 4

Answer

Group 17, Period 3

Answer

Group 2, Period 4

Answer

Group 18, Period 3

Question 23

Which of the following is a metalloid?

Accepted Answer

Boron

Answer

Sodium

Answer

Chlorine

Answer

Magnesium

Question 24

The element with the highest melting point is:

Accepted Answer

Tungsten

Answer

Iron

Answer

Gold

Answer

Copper

Question 25

Which of the following elements is most likely to form an ionic bond?

Accepted Answer

Sodium

Answer

Carbon

Answer

Hydrogen

Answer

Nitrogen

Question 26

The first ionization energy of an element is the energy required to remove:

Accepted Answer

An electron from the outermost energy level

Answer

A proton from the nucleus

Answer

A neutron from the nucleus

Answer

An electron from an inner energy level

Question 27

Which of the following is NOT a trend observed across groups in the Periodic Table?

Accepted Answer

Increasing first ionization energy

Answer

Increasing atomic radius

Answer

Decreasing electronegativity

Answer

Increasing metallic character

Question 28

How does ionic radius change across a period and down a group in the Periodic Table?

Accepted Answer

Ionic radius decreases across a period and increases down a group.

Answer

Ionic radius increases across a period and down a group.

Question 29

Which of the following elements belongs to Group 17 (VIIA) of the Periodic Table?

Accepted Answer

Chlorine

Answer

Helium

Answer

Sodium

Answer

Potassium

Question 30

Which statement accurately describes the organization of elements in the Periodic Table?

Accepted Answer

Elements within a group share similar chemical properties.

Answer

Elements are arranged in order of decreasing atomic mass.

Answer

Elements within a period have the same number of electron shells.

Answer

Elements in the p-block are predominantly gaseous in nature.

Question 31

Which element exhibits the highest electronegativity value?

Accepted Answer

Fluorine

Answer

Chlorine

Answer

Bromine

Answer

Iodine

Question 32

Identify the element that is classified as a metalloid.

Accepted Answer

Silicon

Answer

Oxygen

Answer

Nitrogen

Answer

Aluminium

Question 33

Which of the following elements is considered a noble gas?

Accepted Answer

Helium

Answer

Hydrogen

Answer

Oxygen

Answer

Carbon

Question 34

Identify the element that resides in the 17th group and 3rd period of the Periodic Table.

Accepted Answer

Chlorine

Answer

Magnesium

Answer

Sodium

Question 35

Among the listed options, which element possesses the highest electronegativity value?

Accepted Answer

Fluorine

Answer

Bromine

Answer

Iodine

Answer

Chlorine

Question 36

Indicate the group that is commonly referred to as the 'noble gases'.

Accepted Answer

Group 18

Answer

Group 17

Answer

Group 1

Answer

Group 14

Question 37

Which of the following elements is accurately classified as a metalloid?

Accepted Answer

Silicon

Answer

Chlorine

Answer

Sodium

Answer

Aluminum

Question 38

Identify the element that is most likely to form an ionic bond with sodium.

Accepted Answer

Chlorine

Answer

Phosphorus

Answer

Magnesium

Answer

Carbon

Question 39

Which of the following elements falls under the category of transition metals?

Accepted Answer

Iron

Answer

Chlorine

Answer

Carbon

Answer

Sodium

Question 40

Identify the element that possesses the lowest ionization energy.

Accepted Answer

Cesium

Answer

Nitrogen

Answer

Fluorine

Answer

Oxygen