The atomic numbers of three elements X, Y and Z are 9, 11 and 17 respectively. Which of these two elements will show similar characteristics and why ?

The atomic numbers of three elements X, Y and Z are 3, 11 and 17, respectively. State giving reason which two elements will show similar chemical properties.

The atomic number of three element X, Y and Z are 3, 11 and 17 respectively. State giving reason which two elements will show similar chemical properties.

The atomic numbers of three elements A, B and C are 12, 18 and 20 respectively. State giving reason, which two elements will show similar properties.

The atomic numbers of three elements A, B, and Care 12, 18, and 20 respectively. State, giving reason, which two elements show similar properties.

The atomic numbers of three elements A, B and C are 11, 13 and 19 respectively. Explain which two of the elements will belong to the same group of the periodic table.

The atomic numbers of the three elements X,Y and Z are 2,6 and 10 respectively (i) Which two elements belong to the same group? (ii) Which two elements belong to the same period? Given reasons for your choice.

The atomic numbers of three lanthanide elements X,Y and Z are 65,68 and 70 respectively. The basic character of their hydroxides will decrease as