Question

The nucleus of an atom is composed of 4 protons and 5 neutrons. How many electrons surrounded the nucleus of this atom?

1
4
5
9

Answer 1

Answer:4

Step-by-step explanation:

since it doesnt have a charge it should have the same amount of protons so its 4

Answer 2

In an atom the no. of proton is equal to the no. of electron

= 4 electron

More to know -

• Atom is made up of Proton , neutron and electron

• Proton is positively charged particle , electron is negatively charged particle and neutron is neutral in charge

• Proton and neutron together make up nucleus and located at the centre of atom

• Electron revolves around nucleus

• No. of electron/ proton = Atomic number

• No. of proton + neutron = Atomic mass