Question

A section of the periodic table is shown below: Periodic table showing three rows. Row 1: boron (B), carbon (C), nitrogen (N), oxygen (P), fluorine (F), neon (Ne). Row 2: aluminum (Al), silicon (Si), phosphorus (P), sulfur (S), chlorine (cl), argon (Ar). Row 3: gallium (Ga), germanium (Ge), arsenic (As), selenium (Se), bromine (Br), krypton (Kr). Which of the following elements has properties similar to Kr? Br Ga Ne Se

Answer 1

The answer is Ne. All of the other answers are either solids or liquids. Kr is a gas and so is Ne.

Answer 2

The element in the list that has similar properties to Kr is Ne.

The elements in the periodic table are arranged in groups and periods. In the periodic table, the properties of elements reoccur at definite intervals. Elements in the same group of the periodic table have similar properties hence they participate in similar chemical reactions.

The elements Ne and Kr belong to the same group in the periodic table. Since they belong to the same group, they are chemically similar. They are both unreactive and have eight valence electrons.

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