Question

If an atom has 9 protons & 10 neutrons, state the mass number,atomic number & number of electrons.​

Answer 1

Answer:

mass no. is 19 , atomic no. is 9 and no. of electron is 9

Answer 2

Answer:

AT.NO= No.of protons

=> at no.= 9 (Fluorine)

mass no.= { no.of protons + no.of neutrons}

=> mass no. = 19

Now,

No.of Protons = No. of Electrons

=>No. of Electrons = 9

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