Atoms, Elements and the Periodic Table

Question 1

What is the chemical symbol for the element that has 86 electrons in a neutral atom?

Accepted Answer

Rn

Question 2

What is the name of the element in family 2 with the most protons?

Accepted Answer

Radium

Question 3

Use the atomic numbers of the following elements to solve the problem: Fe x Be = __?

Accepted Answer

104 = Rf

Question 4

What is the smallest whole unit of matter called?

Accepted Answer

atom

Question 5

Which subatomic particle has no charge?

Accepted Answer

neutron

Question 6

What is the symbol for the Nobel Gas found in period 3?

Accepted Answer

Ar

Question 7

What is the name of the element with 3 orbits and 3 valence electrons?

Accepted Answer

Aluminum

Question 8

What is the name of the philosopher who developed the concept of the atom?

Accepted Answer

Democritus

Question 9

What is the name of the element with 47 electrons and 61 neutrons?

Accepted Answer

Silver

Question 10

What 2 subatomic particles make up the mass of the atom?

Accepted Answer

protons and neutrons

Question 11

Up to how many electrons does the 2nd energy level hold?

Accepted Answer

8

Question 12

What is the name of the element in family 17 that combines with Sodium to form table salt?

Accepted Answer

Chlorine

Question 13

The element from family 2 that has fewer protons than bromine, but more protons than sulfur?

Accepted Answer

Calcium

Question 14

What is the symbol of the element with more than 50, but less than 75 protons in family 17.

Accepted Answer

I

Question 15

What is the name of the only metal element with five valence electrons?

Accepted Answer

Bismuth

Questions 15