Question

The diagram below shows part of the periodic table.
a. Which elements would react together to form covalent compounds?
b. Between the two elements W and Z, which will have a bigger atomic
radius? Why?

Answer 1

Answer:

(A) Y and Z

(B) W is bigger .

Because the group number of shells increases

Answer 2

Answer: a) Y and Z

b) W has more enormous atomic radii

Explanation:

Moving down the groups and across the columns and rows of the modern periodic table, we can observe many trends in the properties (physical and chemical) of the elements in the introduction of chemistry.

For example, moving down a group of non-metals decreases the reactivity of an element, whereas shifting down increases it for representative metals.

• If two atoms are bonded, you can estimate the atomic size by looking at the distance between them.
• Another method that can be used to measure the atomic size of non-metallic elements is to form a single covalent bond between two atoms and determine the distance between the two atoms. The radius determined by this method is known as the element's covalent radius.
• Atomic radius is half the distance between adjacent atoms of the same element in a molecule. The
• atomic radius decreases moving left to right in the period and increases down the group. This is because the valence electrons are in the same outermost shell period.
• The atomic number increases with the same period as you move from left to right, increasing the effective nuclear charge.
• As the attractive force increases, the atomic radius of the element decreases. The
• atomic radii decrease as the period progresses and increase as the group progresses. The number of
• energy levels (n) increases as one moves down the group, resulting in a larger distance between the nucleus and the outermost orbital. This increases the atomic radius.

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