The element X in group 17 has 3 shells. If so: What will be the chemical formula of the compound formed if the element X reacts with element Y of the third period which contains one electron in the p subshell?

The element X in group 17 has 3 shells. If so: Write the period number.

Write the chemical formula of the compound formed by combining element S with P.

The element X in group 17 has 3 shells. If so: Write the subshell electronic configura-tion of the element.

Which elements contains 5 electrons in the outermost shell?

The atomic number of four elements are given below. Write the chemical formula of the compound formed by two elements other than inert gases.

Which element among inert gases form, maximum number of compounds? Write the formula of one of the compounds formed by the element.

The outermost electronic configuration of A is 2s^2 2p^2 (Symbols are not real) a) Find the group number, block of this element. b) Write the chemical formula of the compound obtained by the reaction of A and chlorine. c) Write down the complete subshell electronic configuration of the element coming just below A in the same group of the periodic table?

Which is the element that has 5 p electrons in the outermost shell?

Write the atomic number of the element in the third period and group 17 of the period table.