Answer: Option (C) is the correct answer.
Explanation:
The elements of group 2 are also known as alkaline earth metals. Thus, each element of group 2 is an alkaline earth metal.
Group 2 contains six elements from to bottom which are as follows.
Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba) and Radium (Ra). Out of which radium is a radioactive element.
B. Increasing the effective nuclear charge on an ion results in energy levels that are closer together.
hope it helps
Answer:
when water is put into a freezer it will freeze like an ice at 0° celcius
Answer:
more reliable. The more results the better results you get.
Explanation: