Duplicate of Periodic Table & Elements

Question 1

What are valence electrons?

Accepted Answer

Electrons on the outermost energy level

Question 2

Which of the following elements wants to lose 1 electron in order to become stable?

Accepted Answer

Li

Question 3

How many energy levels does an atom of Uranium (U) possess?

Accepted Answer

7

Question 4

Carbon has how many electrons?

Accepted Answer

6

Question 5

Which of the following elements does not need to gain or lose electrons to become stable?

Accepted Answer

Kr

Question 6

The carbon isotope, C-14, has how many electrons?

Accepted Answer

6

Question 7

The number on the bottom (15.999) represents what?

Accepted Answer

atomic mass

Question 8

Which of the following elements has oxidation numbers of +3 and -5?

Accepted Answer

B

Question 9

How many energy levels does an atom of Tin (Sn) possess?

Accepted Answer

5

Question 10

Which of the following elements has an oxidation number of 0?

Accepted Answer

Rn

Question 11

The carbon isotope, C-14, has how many neutrons?

Accepted Answer

8

Question 12

How many neutrons does an atom of oxygen with a mass number of 17 have?

Accepted Answer

9

Question 13

Which of the following elements has an oxidation number of -3?

Accepted Answer

N

Question 14

An isotope has a different number of what?

Accepted Answer

neutrons

Question 15

The columns on the periodic table are called what?

Accepted Answer

groups

Question 16

Which of the following is not a subatomic particle?

Accepted Answer

isotope

Question 17

Which family does Fluorine (F) belong to?

Accepted Answer

Halogens

Question 18

Which of the following elements has an oxidation number of +2?

Accepted Answer

Ba

Question 19

The dots in an electron dot diagram represent what?

Accepted Answer

valence electrons

Question 20

Which of the following elements wants to gain or lose 4 electrons in order to become stable?

Accepted Answer

Si

Question 21

Which of the following describes Antimony (Sb)?

Accepted Answer

metalloid

Question 22

Which of the following elements wants to gain 2 electrons in order to become stable?

Accepted Answer

S

Question 23

Mass number equals what?

Accepted Answer

protons + neutrons

Question 24

Which of the following describes Thallium (Tl)?

Accepted Answer

metal

Question 25

How many valence electrons does calcium have?

Accepted Answer

2

Question 26

Elements in group 17 on the periodic table have how many valence electrons?

Accepted Answer

7

Question 27

Nitrogen has how many protons?

Accepted Answer

7

Question 28

How many electrons complete the first energy level?

Accepted Answer

2

Question 29

The rows on the periodic table are called what?

Accepted Answer

periods

Question 30

Which of the following is not found in the nucleus?

Accepted Answer

electron

Question 31

Which of the following describes Phosphorus (P)?

Accepted Answer

nonmetal

Question 32

Oxygen needs how many electrons to become stable?

Accepted Answer

2

Question 33

The atomic number on the periodic table represents what?

Accepted Answer

number of protons

Question 34

The most scientifically accurate atomic model is called what?

Accepted Answer

Electron cloud model

Question 35

The number 8 represents what?

Accepted Answer

atomic number

Question 36

What atomic model is pictured below?

Accepted Answer

Bohr model

Question 37

The number of electrons an atom gains, loses, or shares is the ___.

Accepted Answer

oxidation number

Question 38

Chlorine needs how many electrons to become stable?

Accepted Answer

1

Duplicate of Periodic Table & Elements

Questions 38

Duplicate of Periodic Table & Elements

Questions 38