Step-by-step explanation:
The elements are;
S K, Ti, Sn,
Shorthand electronic configuration basically involves inserting the closest noble gas element before the element in the configuration.
Sulphur (S): This element has 16 atoms. The noble gas before this element is Neon. So the shorthand electronic configuration is written as;
[Ne] 3s² 3p⁴
Potassium (K): This element has 19 electrons, The noble gas before this element is Argon. So the shorthand electronic configuration is written as;
[Ar] 4s¹
Titanium (Ti): This element has 22 electrons. The noble gas before this element is Argon (18) - remaining 4 electrons. The shorthand is given as;
[Ar] 3d² 4s²
Tin (Sn): This element has 50 electrons. The noble gas before this element is Krypton (36) - remaining 14 electrons. The shorthand is given as;
[Kr] 4d¹⁰ 5s² 5p²