Elements of the Periodic Table

What is the chemical symbol for the element copper?

• Co

• Cu

• C

• Cr

 What is the chemical symbol for the element Silver

• S

• Au

• Ag

• Si

How many protons are in Beryllium?

• 4

• 5

• 6

• 1

What is the atomic mass of Copper?

• 63.546

• 29.546

• 29

• 19

How many neutrons are there in Hydrogen?

• 1

• 2

• 3

• 0

How many electrons are in a gold atom?

• 117

• 56

• 79

• 78

Tags

NGSS.MS-PS1-1

 

How many electrons does an atom of Krypton have?

• 36

• 47.798

• 83.798

• 119.798

Tags

NGSS.HS-PS1-1

In the development of the atomic theory, who came up with the electrons like prunes in plum pudding model ?

• Thomson

• Rutherford

• Bohr

• Dalton

He developed the planetary model of the atom.

• Rutherford

• Chadwick

• Bohr

• Dalton

Subatomic particles with a negative charge

• Electrons

• Protons

• Neutrons

• Quarks

Tags

NGSS.MS-PS2-3