The electronic configuration of three elements X, Y and Z are:
`X:2`
`Y:2,8,7`
`Z:2,8,2`
Which of the following is correct regarding these elements?

The electronic configurations of three elements X, Y and Z are X 2, 8, Y-2, 8, 7 and Z- 2, 8, 2. Which of the following is correct?

The electronic configurations of three elements X, Y and Z are X 2, 8, Y-2, 8, 7 and Z- 2, 8, 2. Which of the following is correct?

The electronic configuration of three elements X, Y and Z are X - 2, 8, Y - 2, 8, 6 and Z - 2, 8, 1. Which of the following is correct ?

The electronic configuration of three elements X,Y and Z are given below: X 2 Y 2,6 Z 2,8,2 (i) Which element belongs to second period? (ii) Which element belongs to second group? (iii) Which element belongs to eighteenth group?

The electronic configuration of X,Y and Z are 2,8, 2, 8, 7 and 2,8,2 respectively. Which of the following is correct? X is a metal Y is a metal Z is a non metal Y is a non metal and Z is a metal

The electronic configuration of the elements, X, Y and Z are given below. A) X=2, B) Y=2,6, C) Z=2,8,3, Which element belongs to second group?

The electronic configuration of three clements X, Y and Z are given below , X = 2 , Y = 2, 6 , Z = 2, 8, 2. (i) Which element belongs to the second period ? (ii) Which element belongs to the eighteenth group ? (iii) Which element belongs to the second group ? (iv) What is the valency of Y ? (v) Are Y and Z metals or non-metals ?

The electronic configuration of three elements X,Y and Z are as follows X 2,4 Y 2,7 Z 2,1 (a) which two elements will combieto form an ionic compound? (b). Which two elementswill react to form a covalent compound? give reason for your choice.