The correct statements are 1 and 3.

1. The atomic radius of a potassium atom is indeed greater than the atomic radius of a chlorine atom. This is because potassium is located to the left of chlorine on the periodic table, and atomic radius generally increases from right to left.

3. The ionic radius of a potassium ion is smaller than the ionic radius of a chloride ion. When potassium loses an electron to become a positively charged ion, it also loses its outermost electron shell, which makes it smaller. On the other hand, when chlorine gains an electron to become a negatively charged ion, it increases in size due to the added electron repulsion.

Statement 2 is incorrect. The first ionisation energy of potassium is less than the first ionisation energy of chlorine. Ionisation energy increases from left to right on the periodic table, so chlorine, which is to the right of potassium, has a higher first ionisation energy.

So, the correct answer is D (1 and 3).

Question

The correct statements are 1 and 3.

1. The atomic radius of a potassium atom is indeed greater than the atomic radius of a chlorine atom. This is because potassium is located to the left of chlorine on the periodic table, and atomic radius generally increases from right to left.

3. The ionic radius of a potassium ion is smaller than the ionic radius of a chloride ion. When potassium loses an electron to become a positively charged ion, it also loses its outermost electron shell, which makes it smaller. On the other hand, when chlorine gains an electron to become a negatively charged ion, it increases in size due to the added electron repulsion.

Statement 2 is incorrect. The first ionisation energy of potassium is less than the first ionisation energy of chlorine. Ionisation energy increases from left to right on the periodic table, so chlorine, which is to the right of potassium, has a higher first ionisation energy.

So, the correct answer is D (1 and 3).

Knowee AI · Accepted Answer

The correct statements are 1 and 3.

1. The atomic radius of a potassium atom is indeed greater than the atomic radius of a chlorine atom. This is because potassium is located to the left of chlorine on the periodic table, and atomic radius generally increases from right to left.

3. The ionic radius of a potassium ion is smaller than the ionic radius of a chloride ion. When potassium loses an electron to become a positively charged ion, it also loses its outermost electron shell, which makes it smaller. On the other hand, when chlorine gains an electron to become a negatively charged ion, it increases in size due to the added electron repulsion.

Statement 2 is incorrect. The first ionisation energy of potassium is less than the first ionisation energy of chlorine. Ionisation energy increases from left to right on the periodic table, so chlorine, which is to the right of potassium, has a higher first ionisation energy.

So, the correct answer is D (1 and 3).

Question

Solution

Similar Questions

Upgrade your grade with Knowee