Periodic Table and Bohr

Question 1

What number on the periodic table states the number of valence electrons an element has?

Accepted Answer

group number

Question 2

How many neutrons does Argon have?

Accepted Answer

22

Question 3

Who improved Mendeleev's design of the periodic table?

Accepted Answer

Henry Moseley

Question 4

What is the element in the Halogen family that contains 74 neutrons?

Accepted Answer

Iodine

Question 5

Who was the first person to create a periodic table?

Accepted Answer

Dmitri Mendeleev

Question 6

Which element is shown in the Bohr model?

Accepted Answer

nitrogen

Question 7

What are the horizontal rows called?

Accepted Answer

periods

Question 8

How many periods are on the periodic table?

Accepted Answer

7

Question 9

Carbon and silicon have the same number of...

Accepted Answer

valence electrons

Question 10

How many total valence electrons do all elements want to have?

Accepted Answer

8

Question 11

Which of the following groups does not follow the valence rule?

Accepted Answer

Groups 3-12

Question 12

Which element is shown in the Bohr model?

Accepted Answer

Al

Question 13

What are the vertical columns called on the periodic table?

Accepted Answer

groups or periods

Question 14

Which atom has 3 energy levels with 7 valence electrons?

Accepted Answer

chlorine

Question 15

What is the element with five electron shells and two valence electrons?

Accepted Answer

strontium

Question 16

Which of the following elements has the greatest atomic mass?

Accepted Answer

neon

Question 17

How did Mendeleev arrange the first periodic table?

Accepted Answer

atomic mass

Question 18

Elements in the same row on the periodic table belong to the same...

Accepted Answer

period

Question 19

Where are the valence electrons located?

Accepted Answer

outermost shell

Questions 19