Question

I
Which of the following two elements have
similar chemical properties?
Element with atomic number 3 and element with
atomic number 11
Element with atomic number 3 and element with
atomic number 9
Element with atomic number 11 and element
with atomic number 9​

Answer 1

Answer:

element with atomic number 3 and element with atomic number 11, because they have same outer electrons, so same chemical properties