International Year of the Periodic Table

Question 1

Atoms of the same element that have a different number of neutrons are called ____________.

Accepted Answer

isotopes

Question 2

What is the name of the first element, with atomic number 1, in the periodic table?

Accepted Answer

Hydrogen

Question 3

Group 1 elements are also called ____________.

Accepted Answer

alkali metals

Question 4

The sum of the number of protons and neutrons inside the nucleus is called the __________.

Accepted Answer

mass number

Question 5

Which subatomic particles are located inside the nucelus of an atom?

Accepted Answer

protons & neutrons

Question 6

To become a negative ion, an atom must ____________.

Accepted Answer

gain electrons

Question 7

Elements with an atomic number higher than __ are not found naturally.

Accepted Answer

92

Question 8

To become a positive ion, an atom must ___________ .

Accepted Answer

lose electrons

Question 9

Who discovered that electrons occupy discrete energy levels and orbit around the atom nucleus?

Accepted Answer

Niels Bohr

Question 10

This is the only element to be named by Asian scientists.

Accepted Answer

Nihonium

Question 11

Which listing below shows the proper charges of the subatomic particles?

Accepted Answer

p = +1 n = 0 e = -1

Question 12

Who first discovered a systematic relationship between atomic number and X-ray wavelengths?

Accepted Answer

Henry Moseley

Question 13

Who organized the periodic table based on atomic mass, and chemical and physical properties?

Accepted Answer

Dmitri Mendeleev

Question 14

Who discovered nuclear charge by studying scattering of alpha particles by heavy atom nuclei?

Accepted Answer

Ernest Rutherford

Question 15

Elements that have chemical and physical properties of both metals and nonmetals are ________.

Accepted Answer

metalloids

Question 16

This fruit is rich in an element that has an isotope which beta decays and emits antineutrinos.

Accepted Answer

Banana

Question 17

Which year has been proclaimed the international year of the periodic table by UNESCO?

Accepted Answer

2019

Question 18

The term "atom" was first defined by which greek philosopher?

Accepted Answer

Democritus

Question 19

The average mass of all the isotopes for a given atom is called ___________.

Accepted Answer

average atomic mass

Question 20

Why did some elements in the periodic table have 3 letters until 2016?

Accepted Answer

a committee must still review it and come up with a name

Question 21

An early chemical theory was called Phlogiston Theory. What did it say?

Accepted Answer

Burning/combustion was caused by release of phlogiston.

Question 22

This scientist recognized and named oxygen and hydrogen and opposed the Phlogiston theory(1778)

Accepted Answer

Antoine Lavoisier

Question 23

Which group of elements has the lowest ionization energies?

Accepted Answer

Alkali metals

Question 24

Which of these elements have names originating from Arabic?

Accepted Answer

Sodium, Boron, Zirconium, Kalium (Potassium)

Question 25

This scientist won the nobel prize twice, 1903 and 1911, and co-discovered Radium and Polonium.

Accepted Answer

Marie Curie, née Sklodowska

Question 26

What year did Sir William Ramsay suggest to add a group (noble gasses) to the periodic table?

Accepted Answer

1898

Question 27

Elements in groups 3 - 12 are called ___________.

Accepted Answer

transition metals

Question 28

What are the names of the four most recently named elements?

Accepted Answer

Nihonium, Moscovium, Tennessine, Oganesson

Question 29

Which letter from the alphabet cannot be found in the periodic table?

Accepted Answer

J

Question 30

Who first realized that the atomic number of an element corresponds to charge of its nucleus?

Accepted Answer

Antonius van den Broek

Question 31

The energy required to remove an electron from a gaseous atom is called what?

Accepted Answer

Ionization Energy

Question 32

What does "Halogen" mean in greek?

Accepted Answer

Salt forming

Question 33

Which of these elements has the smallest atomic radius?

Accepted Answer

Fluorine

Question 34

When did IUPAC last update the periodic table?

Accepted Answer

June 2018

Question 35

Elements on the modern periodic table are arranged according to their _________.

Accepted Answer

atomic numbers

Question 36

Who organized a periodic table based on atomic weights and the "law of octaves" in 1864?

Accepted Answer

John Newlands

International Year of the Periodic Table

Questions 36

International Year of the Periodic Table

Questions 36