Question

which two elements would you expect to have very similar chemical properties?​

Answer 1

Answer:

Silicon and germanium

Xenon and Radon

Helium and Argon

Neon and Argon

Phosphorus and Sulphur

Potassium and sodium

Answer 2

Two different elements are likely to have similar chemical properties when they have the same number of valence electrons. Elements with the same number of valence electrons are found in the same column of the Periodic Table.

Calcium (Ca) and strontium (Sr) are expected to show chemical reactions similar to magnesium (Mg). This is because the number of valence electrons (2) is same in all these three elements. And since chemical properties are due to valence electrons, they show same chemical reactions.

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