Question

Define atomic number ? write the atomic number of carbon and oxygen? ( 5 marks question) ​

Answer 1

The number of protons in the nucleus is equal to the number of electrons is called the atomic number of an element. The atomic no. of oxygen is 8 and the atomic no. of carbon is 20.

Hope this may help you....... ^•^

Answer 2

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The number of protons in the nucleus of an atom determines an element's atomic number. In other words, each element has a unique number that identifies how many protons are in one atom of that element. For example, all hydrogen atoms, and only hydrogen atoms, contain one proton and have an atomic number of 1.

Atomic number of :

• carbon ➝ C ➝ 6
• oxygen ➝ O ➝ 8