Question

Write the ion (atom) that has 28 protons and has lost 2 electrons.

Write the ion (atom) that has 18 protons and 18 electrons.

Write the ion (atom) that has 16 protons and has gained 2 electrons.

Write the ion (atom) that has 46 electrons and has lost 4 electrons.

Express your answer as a chemical symbol or as an ion.

Answer 1

1) Write the ion (atom) that has 28 protons and has lost 2 electrons.

Answer: if atom or ion has 28 protons it means the atomic number= 28

Atomic number of Nickel is 28

As it has lost two electrons so the symbol will be Ni⁺²

2) Write the ion (atom) that has 18 protons and 18 electrons.

The number of protons = 18

So the atomic number = 18

as the number of electrons = number of protons so it is neutral

Symbol will be Ar

3) Write the ion (atom) that has 16 protons and has gained 2 electrons.

The number of protons = 16

so atomic number = 16

Sulfur has atomic number = 16

after gaining two electrons it will acquire negative charge

Symbol will be : S^-2

4) Write the ion (atom) that has 46 electrons and has lost 4 electrons.

If it has 46 electrons and has lost 4 electrons so actual number of electrons = 50

So number of protons = atomic number = 50

so element is tin (Sn)

so the symbol will be Sn⁺⁴