Two elements X and Y have atomic number 12 and 17 respectively.
(i) Write the electronic configuration of both.
(ii) Which type of bond will they form ?
(iii) Write the formula of the compound formed by their combination (in terms of X and Y).

Two elements X and Y have atomic number 12 and 16 respectively.Write the electronic configuration for these elements.To which period of the Modern periodic table do these two elements belong?

Elements X, Y and Z have atomic numbers 6, 9 and 12 respectively. Which one : forms a cation

Elements X, Y and Z have atomic numbers 6, 9 and 12 respectively. Which one : forms an anion

Elements X, Y have atomic numbers 9 and 12 respectively. Which one of these a) forms negative ion ?

Two elements X and Y have atomic numbers 12 and 16 respectively. Write the electronic configuration for these elements. To which period of the modern perioidic table to these two elements belong? What type of bond will be formed between them and why?

Two atoms X and Y have 5 and 7 valence electrons. The formula of the compound formed by their combination is

Elements X,Y have atomic numbers 9 and 12 respectively. Which one of these forms positive ion ?

Two elements X and Y have atomic numbers 12 and I 6 respectively. Write the electronic configuration for these elements. To which period of the modern periodic table do these two elements belong ? What type of bond will be formed between them and why ?