Which of the following statement is correct for atomic radius in modern periodic table?
Answer. Mate your answer is b)Atomic radius decreases in moving from left to right along a period as nuclear charge increases across the period.
What is incorrect about modern periodic table?
Answer. ▪︎Elements in the Modern Periodic Table are arranged on the basis of their increasing atomic number hence option i) is wrong . ▪︎In modern periodic table atomic mass is not a criteria hence option ii) is wrong. ▪︎ Isotopes are given the same position in periodic table hence option iii) is wrong.
How many groups are there in the modern periodic table?
18
Which one of the following statement is correct for atomic size?
The correct answer is (c). Atomic size decreases along the period.
Which of the following is incorrect for atomic size?
Atomic size decreases along the period, as we move from left to right in any period due to increase in effective nuclear charge. Thus, atomic size of \(B\) is less than of \(Be\). Hence, (a) is the incorrect statement.
Which statement is correct for carbon family?
Explanation: In carbon family stability +2 oxidation state increases on moving down the group in the periodic table with an increase in atomic number due to screening effect.
Which of the following statement is correct ionic radius?
The radius of the ion is subject to the effective nuclear charge, more the effective nuclear charge, more strongly the electrons are attracted towards the nucleus and the size of the ion decreases. Therefore the ionic radius is inversely proportional to effective nuclear charge. So, the correct answer is “Option C”.
Which is the correct order of size of O o2 F F?
The correct option is B (O2−>O−>F−>F).
Why does atomic size increase down Group 10?
The atomic size increases from top to bottom in a group as the atomic number increases. Since there are more filled energy levels so the valence electrons are found farther from the nucleus increasing the atomic size.
What is the difference between screening effect and shielding effect?
Shielding effect is the reduction in the effective nuclear charge on the electron cloud, due to differences in the attraction forces between electrons and the nucleus. Shielding effect is also known as the Screening Effect. Hence, there is no difference between these two terms. They primarily mean the same thing.