Question

w, x, y and z are elements in the same period in the periodic table. w and y are metals. x and z are non - metals. which shows the correct order of these elements across the period? a w x y z b xz w y c y wxz d w y xz o a o c o d o b

Explanation:

Step1: Recall periodic - table trend

In a period of the periodic table, metals are on the left - hand side and non - metals are on the right - hand side.

Step2: Order metals and non - metals

Since W and Y are metals and X and Z are non - metals, the metals (W and Y) should come before the non - metals (X and Z). Also, within metals, the element with a lower atomic number is to the left of the one with a higher atomic number. Without more information about the specific metals and non - metals, a possible order with metals first and then non - metals is W, Y, X, Z.

Answer:

D. W, Y, X, Z