Question

The number of electrons, protons and neutrons in 31p3-ion is respectively
a) 15,15,16 b) 15,16,15 c) 18,15,16 d) 15,16,18​

Answer 1

Answer:

hey dear option number (c) 18,15,16 is the correct answer.

Answer 2

(C) 18, 15, 16 is the correct answer.

Given:

$31P^{-3}$ ion

To Find:

The number of electrons, protons and neutrons.

Solution:

• Atomic Number = Number of Protons

• Mass Number = Number of Protons + Number of Neutrons

• Number of Electron = Atomic Number -(Number of Charges)

Therefore,

• Number of Protons = 15

• Number of Neutrons = 31 - 15 = 16

• Number of Electrons = 15 - (-3) = 15 + 3 = 18

Hence , $31P^{-3}$ ion contains , 18 electrons , 15 protons and 16 neutrons.

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