Who can answer this question in science?

[test_tube]

Al salam alikom
Could u please help me in answering this question ?
It is from the first lesson

*write the scientific term

-
It represents whole number and it's a specific property for each element( )

[MIKYGOST]

atomic number

[test_tube]

المشاركة الأصلية كتبت بواسطة MIKYGOST

atomic number

Thanx alot
Jazak allah '7irn

[alihakeem]

atomic number

[محمد عقلة]

مشكوررررررررررررررر

[محمد عقلة]

مشكوررررررررررررررر

[مسترسمير إبراهيم]

بالتوفيق والنجاح