Four elements A, B, C and D have the following electron arrangement in their atoms:
A 2,8,6
B 2,8,8
C 2,8,81
D 2,7
(a). What type of bond is formed when element C combines with element D?
(b). Which element is an inert gas?
(c). What will be the formula of te compound between A and C?

The electroin arrangements of four elements are given below : A 2,8,7 B 2,8,18,8 C 2,8,1 D 2,8,6 (i) Name the type of bond formed when A combines with C. (ii) Which of the four elements is an inert gas ? (iii) Write the formula of the compound formed between C and D.

The electronic configurations of four element A , B , C and D are as follows. A. 2,8,1 B. 2,8,7 C. 2,8,8 D. 2,4 (a) which of these elements is a metal ? (b) Which of these elements are non-metals? © Which two elements will combine to form an ionic bond? (d) Which two elements will combine to form a covalent bond ? (e) which element will form an anion of valency 1? (f) Which element is a noble gas ?

The electronic configurations of three elements A, B, and C are as follows: A 2,8,1 B 2,8,7 C 2,4 (a). Which of these elements is a metal? (b). Which of theseelements are non-metals? (c). Which two elements will combine to form an ionic bond? (d). Which two elements will combine to form a covalent bond? (e). Which element will form an anion of valency 1?

What is the formula of the compound formed when an element A (atomic number = 19) combines with an element B (atomic number =17) ?

The electron distribtution of the elements represented by the letters. A, B, C and D are so follows : A to 2,8,2 C to 2,8,8 B to 2,7 D to 2,8,8,2 Now , answer the following: (i) which one of the elements belongs to the 2nd period ? (ii) Name the elements which belong to the same group. (iii) Which of the elements is a noble gas ? (iv) Which of the elements are metals ? (v) What type of bond is likely to be formed when B and D combine ?