Table of Contents
- 1 Why does the atomic radius increase when the atomic number increases?
- 2 Which is the best reason that the atomic radius generally increases as you move down the group of elements?
- 3 What happens when the atomic number increases?
- 4 Why does atomic radius generally increase down a group on the periodic table quizlet?
- 5 What determines atomic radius?
- 6 What do you think is the reason for an increasing atomic radius within one group quizlet?
Why does the atomic radius increase when the atomic number increases?
As the atomic number increases along each row of the periodic table, the additional electrons go into the same outermost shell; whose radius gradually contracts, due to the increasing nuclear charge.
Which is the best reason that the atomic radius generally increases as you move down the group of elements?
When moving down a group of the periodic table, the atomic radius increases because of the presence of additional principal energy levels, which are further away from the nucleus.
Which is the best reason that the electronegativity generally increases with atomic number of the element in each period of the periodic table?
Electronegativities generally increase from left to right across a period. This is due to an increase in nuclear charge. Alkali metals have the lowest electronegativities, while halogens have the highest.
What is the reason for increasing atomic radius in one group?
Group Trend Higher principal energy levels consist of orbitals which are larger in size than the orbitals from lower energy levels. The effect of the greater number of principal energy levels outweighs the increase in nuclear charge and so atomic radius increases down a group.
What happens when the atomic number increases?
When the atomic number increases, this means that there are more protons and neutrons that add to the atomic mass of an atom. The atomic mass for any given atom mainly comes from the mass of the protons and neutrons.
Why does atomic radius generally increase down a group on the periodic table quizlet?
Why does atomic radii increase as you move down a group? The number of energy levels increases as you move down a group as the number of electrons increases. Each subsequent energy level is farther from the nucleus than the previous one. Therefore, the atomic radius increases as the group and energy levels increase.
Which of the following best helps to explain why the atomic radius of K is greater than that of BR?
Which of the following best helps to explain why the atomic radius of K is greater than that of Br? The effective nuclear charge experienced by valence electrons is smaller for KK than for Br. Because the RbRb electron is farther from its nucleus, there is a weaker attraction and it is easier to lose.
Why does atomic radius affect electronegativity?
As the size of any atom or the atomic radius decreases, we can see that electronegativity increases. Hence, atomic radius and electronegativity are related in the context that, with decrease in radius electronegativity increases due to more electron density.
What determines atomic radius?
As the atomic number of an element increases, so does the size of its nucleus and the number of electrons around it. The bigger the atomic number, the larger the atom’s radius.