Q41 of 181 Page 305

The elements A, B, C, D and E have atomic numbers 9, 11, 17, 12 and 13 respectively. The pair of elements which belongs to the same group of the periodic table is:

The elements A, B, C, D and E have atomic numbers 9, 11, 17, 12 and 13 respectively. The pair of elements which belongs to the same group of the periodic table is A and C.

More from this chapter

All 181 →
39

The atomic number of an element is 20. In modern periodic table, this element is placed in :

 40

Five elements A, B, C, D and E have atomic numbers of 2, 3, 7 10 and 18 respectively.The elements which belong to the same group of the periodic table is :

 42

Which of the following element would lose an electron easily?

 43

Which of the following element does not lose an electron easily?