Question

Again with the chemistry questions all help is appreciated :’)

Answer 1

Hello again, I think the option will be the third one Rubidium im highly sure because the periodic table goes by the number of protons which in your question is 37. So yeah it will be rubidium.

Step-by-step explanation:

Look for 37 protons in the periodic table.

Answer 2

The answer is Rubidium

Step-by-step explanation:

The number of protons is unique for each element. It is also identified as an element’s atomic number. Look for an element with the number of protons as the atomic number to find the unidentified element.