Which pair of atomic numbers represent elements in the same group 6,12. 4,16. 11,19. 8,7
Answers
Answered by
3
Answer:
11,19
Explanation:
Atomic number 11 is Sodium(Na)
Atomic number 19 is Potassium (K)
Both of these belong to first group(Alkali metals)
Answered by
2
Answer:
11 , 19 have same atomic number
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