Answered

GET THE NO. OF PROTON, ELECTRON AND NEUTRON

1. ALUMINUM ( Atomic number 13 , Atomic mass = 27
2. CALCIUM ( Atomic number 20, Atomic mass = 40
3. BORON ( Atomic number 5 , Atomic mass = 11

Sagot :

DAZAKEITH01GO

1. P-13 E-14 N-13

2. P-20 E-20 N-20

3. P-5 E-6 N-5

Explanation:

Proton and Neutron = Atomic Number

Electron = Atomic Mass - Atomic Number

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