The electronic configuration of the eleme-nts, A,B,C,D are given below. `1s^2 2s^2 2p^6 3s^2 3p^4`,`1s^2 2s^2 2p^6 3s^2`,`1s^2 2s^2 2p^6 3s^2 3p^5`,`1s^2 2s^2 2p^6 3s^1` Which of these elements can form basic oxides?

The electronic configuration of the elements are given below. A- 1s^2 2s^2 2p^6 3s^2 3p^4 B- 1s^2 2s^2 2p^6 3s^2 C- 1s^2 2s^2 2p^6 3s^2 3p^5 D- 1s^2 2s^2 2p^6 3s^1 Which of these elements show +2 oxida-tion state?

The electronic configuration of the elements, are given below. A- 1s^2 2s^2 2p^6 3s^2 3p^4 B- 1s^2 2s^2 2p^6 3s^2 C- 1s^2 2s^2 2p^6 3s^2 3p^5 D- 1s^2 2s^2 2p^6 3s^1 Which metal belongs to 17^(th) group?

The subshell electronic configuration of A,B,C and D are given below. A - 1s^2 2s^2 2p^6 3s^2 3p^4 B - 1s^2 2s^2 2p^6 3s^2 C - 1s^2 2s^2 2p^6 3s^2 3p^5 D - 1s^2 2s^2 2p^6 3s^1 a. Which of these elements can show +2 oxidation state? b. Which element belongs to 17th group? c. Find the period of elements A what is the basis of this finding? d. Which of these elements can form oxides of basic character?

The electronic configuration of the elements are given below. A- 1s^2 2s^2 2p^6 3s^2 3p^4 B- 1s^2 2s^2 2p^6 3s^2 C- 1s^2 2s^2 2p^6 3s^2 3p^5 D- 1s^2 2s^2 2p^6 3s^1 Which is the period number of the elem-ent A? What is the basis of your find-ings?

The subshell electonic configuration of some elements are given below. (Symbols are not real) P - 1s^2 2s^2 2p^3 Q - [Ar] 3d^3 4s^2 R - 1s^2 2s^2 2p^6 S - 1s^2 2s^2 2p^6 3s^1 a. Which of these elements can form coloured compound? Which elements are included in the same block? c. Identify the inert gas. d. Write the chemical formula of the compound formed by the reaction of P and S.

Examine the given electronic configurations. A- 1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^2 B- 1s^2 2s^2 2p^6 3s^1 C- 1s^2 2s^2 2p^6 3s^2 3p^6 D- 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 : Which of these elements belongs to 4^(th) period ?

Examine the given electronic configurations. A- 1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^2 B- 1s^2 2s^2 2p^6 3s^1 C- 1s^2 2s^2 2p^6 3s^2 3p^6 D- 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 : Which element has highest metallic ch-aracter ?

Examine the given electronic configurations. A- 1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^2 B- 1s^2 2s^2 2p^6 3s^1 C- 1s^2 2s^2 2p^6 3s^2 3p^6 D- 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 : Which elements belongs to the same group?

Examine the given electronic configurations. A- 1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^2 B- 1s^2 2s^2 2p^6 3s^1 C- 1s^2 2s^2 2p^6 3s^2 3p^6 D- 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 : Which element doesn’t participate in che-mical reactions generally ?