Which of the following sets of elements has the same valency ?
[amp_mcq option1=”Na, Mg, Ca” option2=”Na, Mg, Al” option3=”Mg, Ca, K” option4=”Mg, Ca, Ba” correct=”option4″]
This question was previously asked in
UPSC NDA-1 – 2021
Which of the following sets of elements has the same valency ?
[amp_mcq option1=”Na, Mg, Ca” option2=”Na, Mg, Al” option3=”Mg, Ca, K” option4=”Mg, Ca, Ba” correct=”option4″]