Question

identify the odd one option Rb ra sr Be​

Answer 1

Answer:

Rubedium (Rb) is the odd one out as it is an element of Group 1(Alkali Metal) whereas the rest are elements of Group 2 of the periodic table (Alkaline Earth Metals)

Answer 2

The odd one option is Ra.

Explanation:

• Substances or elements which decay naturally are known as radioactive substances or radioactive elements. As rubidium (Rb) is a group 1 element but it does not decay naturally. Hence, it is not radioactive in nature.

• Both beryllium (Ra) and strontium (Sr) are group two elements and both of them are metals. They do not decay naturally which means that both beryllium and strontium are also not radioactive elements.

• Radon is also group two element. And, radon has the ability to decay naturally which means that radon is radioactive in nature.

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