Question

2. Be, F., Si, K, Ca
a) Select the element that has same group and give reason.
b) Select the elements that has same period and give reason.​

Answer 1

Answer:

a) Be and Calcium, since both the elements have 2 electrons in the outershell

b) Be and F: has the maximum principal quantum number as 2

si and k: has the maximum principal quantum number as 3

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