Nucleus properties

What carries no charge 

• Neutrons
• Electrons
• Protons

who discovered proton

• 
• 
• 
• None of the above

The mass number of a nucleus is equal to

• the number of neutrons in the nucleus

• the number of protons in the nucleus

• the number of nucleons in the nucleus

• none of them

How many atoms are in this molecule?

• 1

• 2

• 3

• 4

The half life of a certain radio isotope is such that 7/8 of the given quantity decays in 12 days. What fraction will be left after 24 days?

• $77/100$

• $1/32$

• $1/64$

• $1/128$

 $N_7^{14}\ +\ He_2^4\ \ \rightarrow\ O_8^{16}\ \ +\ X_a^b$  what is  $X_a^b$  in the equation

• Proton

• Electron

• Neutron

• Deutron

What are the 3 subatomic particles that make-up the atom?

• protons, neutrons, and isotopes
• neutrons, isotopes, and electrons
• positives, negatives, and electrons
• protons, neutrons, and electrons

The mass of one proton is greater than the mass of one...

• neutron
• electron

Name the element

• Boron

• Carbon

• Nitrogen

• Oxygen

Which nuclide is stable?

• A

• B

• C

• D