Atoms and Periodic Table

Question 1

What is the isotope number for this isotope? Ti-50

Accepted Answer

50

Question 2

Which of the following non metals is the most reactive?

Accepted Answer

Neon (Ne)

Question 3

Ernest Rutherford is credited for discovering which particle of the atom?

Accepted Answer

proton

Question 4

What is the atomic number for the following isotope? U-238

Accepted Answer

92

Question 5

Who theorized the first ideas about atoms?

Accepted Answer

Democritus

Question 6

In 1913, ____showed that electrons could have a specific amount of energy, leading to orbits.

Accepted Answer

Niels Bohr

Question 7

JJ Thomson discovered which particle?

Accepted Answer

electron

Question 8

Which of the following is the least reactive?

Accepted Answer

Xenon (Xe)

Question 9

Oxygen (O) is part of which of the following families?

Accepted Answer

Nonmetals

Question 10

Which of these is NOT a principle of Dalton's Atomic Theory?

Accepted Answer

An atom of one element can change into a different element.

Question 11

How many electrons does Berryllium (Be) have?

Accepted Answer

4

Question 12

Which of these metals in the most reactive?

Accepted Answer

Radium-Ra

Question 13

How many protons are in the following isotope? Pd-110

Accepted Answer

46

Question 14

What are the vertical columns on the periodic table called?

Accepted Answer

Groups

Question 15

How many protons does the following isotope have? H-2

Accepted Answer

1

Question 16

Who discovered the electron?

Accepted Answer

J.J. Thomson

Question 17

An _______ is identified by its mass number, which is the sum of the protons and neutrons.

Accepted Answer

Isotope

Question 18

Atom is defined as________.

Accepted Answer

the smallest particle of an element

Question 19

Horizontal rows of the periodic table are called_______.

Accepted Answer

Periods

Question 20

How many electrons are in the following isotope? C-12

Accepted Answer

6

Question 21

What is the charge of a proton?

Accepted Answer

Positive

Question 22

What is the atomic number of Gallium (Ga)?

Accepted Answer

31

Question 23

How many neutrons are in the following isotope? U-235

Accepted Answer

143

Question 24

How many electrons in the following isotope? U-238

Accepted Answer

92

Question 25

What charge is the neutron?

Accepted Answer

no charge

Question 26

What is the total number of neutrons from the following isotope? Ru-104

Accepted Answer

60

Question 27

The most reactive non metals are located in which part of the periodic table?

Accepted Answer

Top Right

Question 28

Which of the following is Not a principle of Dalton's Atomic Theory?

Accepted Answer

An atom of one element can be changed into other elements.

Question 29

The number of protons in the nucleus is called________.

Accepted Answer

atomic number

Question 30

The following elements belong to which family: Neon, Argon, Krypton, Xenon

Accepted Answer

Noble Gases

Question 31

Francium is part of which family?

Accepted Answer

Alkali metals

Question 32

How many protons and electrons does the following isotope have? Ne-20

Accepted Answer

10

Question 33

Who is credited with developing the modern atomic model?

Accepted Answer

All of the above

Question 34

Gold (Au) can be found in which family on the periodic table?

Accepted Answer

Transition metals

Question 35

How many electrons does Tin (Sn) have?

Accepted Answer

50

Question 36

Who discovered the neutron?

Accepted Answer

James Chadwick

Question 37

What is the charge of an electron?

Accepted Answer

Negative

Question 38

Who developed the first periodic table?

Accepted Answer

Dmitri Mendeleev

Question 39

Magnesium (Mg) is a _______.

Accepted Answer

Alkaline Earth Metal

Question 40

Which of the following is Not a family on the periodic table?

Accepted Answer

All of these are a family on the periodic table.

Atoms and Periodic Table

Questions 40

Atoms and Periodic Table

Questions 40