Periodic Table

Question 1

What are the 6 Noble Gases in the 8A group and their atomic numbers?

Answer 1

Helium (He 2), Neon (Ne 10), Argon (Ar 18), Krypton (Kr 36), Xenon (Xe 54), Radon (Rn 86)

Question 2

What are the Alkali metals elements in the 1A group and their atomic numbers?

Answer 2

Lithium (Li 3), Sodium (Na 11), Potassium (K 19), Rubidium (Rb 37), Cesium (Cs 55), Francium (Fr 87)

Question 3

What are the Alkali Earth metals in the 2A group and their atomic numbers?

Answer 3

Beryllium (Be 4), Magnesium (Mg 12), Calcium (Ca 20), Strontium (St 38), Barium (Ba 56), Radium (Ra 88)

Question 4

What are the 15 rare earth metals (Lanthanides group)?

Answer 4

Lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Promethium (Pm), Samarium (Sm), Europium (Eu), Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er), Thulium (Tm), Ytterbium (Yb), Lutetium (Lu)

Question 5

What are the 15 Actinide elements?

Answer 5

Actinium (Ac), Thorium (Th), Protactinium (Pa), Uranium (U), Neptunium (Np), Plutonium (Pu), Americium (Am), Curium (Cm), Berkelium (Bk), Californium (Cf), Einsteinium (Es), Fermium (Fm), Mendelevium (Md), Nobelium (No), Lawrencium (Lr)

Question 6

What is the application of Lanthanum (La)?

Answer 6

Telescope Lenses

Question 7

What is the application of Cerium (Ce)?

Answer 7

Lighter Flints

Question 8

What is the application of Praseodymium (Pr)?

Answer 8

Torch Workers’ Eyeglasses

Question 9

What is the application of Neodymium (Nd)?

Answer 9

Electric Motor Magnets

Question 10

What is the application of Promethium (Pm)?

Answer 10

Luminous Dials

Question 11

What is the application of Samarium (Sm)?

Answer 11

Electric Motor Magnets

Question 12

What is the application of Europium (Eu)?

Answer 12

Color Televisions

Question 13

What is the application of Gadolinium (Gd)?

Answer 13

MRI Diagnosis

Question 14

What is the application of Terbium (Tb)?

Answer 14

Fluorescent Lamps

Question 15

What is the application of Dysprosium (Dy)?

Answer 15

Smart Material Actuators

Question 16

What is the application of Holmium (Ho)?

Answer 16

Laser Surgery

Question 17

What is the application of Erbium (Er)?

Answer 17

Optical Fiber Communications

Question 18

What is the application of Thulium (Tm)?

Answer 18

Laser Surgery

Question 19

What is the application of Ytterbium (Yb)?

Answer 19

Scientific Fiber Lasers

Question 20

What is the application of Lutetium (Lu)?

Answer 20

Photodynamic Medicine

Question 21

What is the application of Actinium (Ac)?

Answer 21

Radioactive Medicine

Question 22

What is the application of Thorium (Th)?

Answer 22

Gas Lamp Mantles

Question 23

What do Protactinium (Pa), Neptunium (Np), and Berkelium (Bk) have in common?

Answer 23

They all are radioactive wastes.

Question 24

What is the application of Uranium (U)?

Answer 24

Nuclear Power

Question 25

What is the application of Plutonium (Pu)?

Answer 25

Nuclear Weapons

Question 26

What is the application of Americium (Am)?

Answer 26

Smoke Detectors

Question 27

What are Curium (Cm) and Californium (Cf) used for?

Answer 27

Mineral Analyzers

Question 28

What do Einsteinium (Es), Fermium (Fm), Mendelevium (Md), Nobelium (No), and Lawrencium (Lr) have in common?

Answer 28

They all are radioactive, never found in nature, have no uses except atomic research.

Question 29

Identify the 15 superheavy elements in the period 7

Answer 29

Rutherfordium (Rf), Dubnium (Db), Seaborgium (Sg), Bohrium (Bh), Hassium (Hs), Meitnerium (Mt), Darmstadtium (Ds), Roentgenium (Rg), Copernicium (Cn), Nihonium (Nh), Flerovium (Fl), Moscovium (Mc), Livermorium (Lv), Tennessine (Ts), Oganesson (Og)

Question 30

Define ionization energy (IE)

Answer 30

Ionization energy is the amount of energy required to remove the most loosely bound electron, the valence electron, of an isolated gaseous atom to form a cation.

Question 31

Define electron affinity (EA)

Answer 31

Electron affinity is the amount of energy “released” or “spent” when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion.

Question 32

What elements have the most EN values? Specify the first 5 elements and their values

Answer 32

F = 3.98, O = 3.44, Cl = 3.16, N = 3.04, Br = 2.96

Question 33

Provide examples of useful ions that have an oxidation number of -1

Answer 33

ClO, ClO2, ClO3, ClO4, NO2, NO3, OH, CN, SCN, OCN, MnO4

Question 34

Provide examples of useful ions that have an oxidation number of -2

Answer 34

SO3, SO4, CO3, CrO4, Cr2O4, Cr2O7

Question 35

Provide examples of useful ions that have an oxidation number of -3

Answer 35

PO3, PO4