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JAMB - Chemistry (2017 - No. 41)

A particle that contains 9 protons, 10 neutrons and 10 electrons is
positive ion
neutral atom of a metal
neutral atom of a non-metal
negative ion

Maelezo

protons = 9

neutrons = 10

electrons = 10

Electronic configuration = 2, 8

Ground state Electronic configuration=2, 7

It means that the atom has gained an electron thereby making it have a negative ion.

When an atom donates an electron, it becomes positively charged.

When an atom accepts an electron, it becomes negatively charged

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