Question

The atomic number of oxygen and sulphur are 8 and 16 respectively. What will be the number of electrons in these ?



need a ans. ​

Answer 1

Answer:

Given that: atomic no. of oxygen = 8

and atomic no. of sulphur = 16

We know that

atomic no. = no. of protons = no. of electrons

∴ Number of electrons in oxygen in 8 and in sulphur is 16

Answer 2

Concept:

The atomic number is the no of electron and protons in a stable atom.

The atomic mass is the number of Protons + Neutrons in an atom.

They collectively are also called as Nucleons.

Question:
The atomic number of Oxygen and Sulphur are 8 and 16 respectively. What will be the number of electrons in these ?

Solution:

As the atomic number is the number of protons or electrons and the atomic number is given of Oxygen as 8

The number of electrons in Oxygen is 8

Similarly, The atomic number of Sulfur is 16 so the number of electrons is 16.

Note: Normally for atomic number we consider protons because in an ion the number of electrons vary.

Let me give you an example.

In Na(Sodium)

No of electrons and protons is 11
but in Na⁺ the number of electrons is 11-1 as it has +ve charge but it does not mean that the Atomic number changes. The atomic Number will remain 11 only.

Final Answer:

1)In oxygen no of electron is 8

2)In sulfur no of electron is 16