The atomic number of X is 17, predict its: a. Valence electron and Valency b. Type of ion formed and Formula of its halide c. Its size with in comparison with neighbouring elements d. Reactivity with respect to the other of same group e. The electronic configuration of element on its left and right

The atomic number of X is 17, predict its: a. Valence electron and V

1.	The atomic number of X is 17, predict its: a. Valence electron and Valency b. Type of ion formed and Formula of its halide c. Its size with in comparison with neighbouring elements d. Reactivity with respect to the other of same group e. The electronic configuration of element on its left and right
Answer» nic configuration of X- 2,8,7a. VALENCE electrons: 7 Valency: 1b. Type of ion formed: Anion(-ve)Formula of its halide: XFc. In the period of the modern periodic table, we observe that Argon is next to clorine. The size of Argon is larger than that of clorine. The major reason BEHIND this is the phenomenon of Interelectronic repulsion. The size of Argon atoms is more as it is STABLE than Clorine. This is the size of clorine with respect to other neighbouring elements.Explanation: