Question

an element x has 1 valence electron and element y has 7 valence electrons write the equation for the formation of ions of x and y​

Answer 1

Answer it will be xy

as u see in the case of NaCl

Explanation: Na has 1 valence electron and Cl has 7 valence electrons.

Here chlorine needs one electron to complete the octet which it takes from Na(sodium) .

Answer 2

Answer:

Answer is xy

Explanation:

Since the E.C of Na is 2,8 1 & Na has 1 electron in its outermost shell or penultimate shell.So, now Na will lose its 1 electron to attain the stable E.C of nearest noble gas Neon (2,8)

Similarly , the E.C of Cl is 2,8,7 & Cl ha 7 electrons in its outermost shell. So, now Cl will gain 1 electron to attain the stable E.C of nearest noble gas Argon (2,8,8)

Thus NaCl forms the equation xy