6. What is the number of electron of Mg? A. 12

C. 36

B. 24

D. 50

7. To compute for the number of neutron of an element, ___________.

A. add the atomic number from the atomic mass.

B. divide the atomic mass from the atomic number.

C. multiply the atomic number from the atomic mass.

D. subtract the atomic number from the atomic mass.

8.Which two subatomic particles are the same with atomic number?

A. proton and neutron

C. neutron and electron

B. electron and proton

D. nucleus and neutron

9. How do we determine the proton of a particular element with the use of a periodic table? Find the ____________ of

the element in the periodic table.

A. atomic number

C. atomic radius

B. atomic mass

D. atomic weight

10. The central part of the atom where the positive and no charges sub atoms are located is known as the

______________.

A. proton

C. neutron

B. electron

D. nucleus ​