Electron-nucleus Interaction Strength Quiz

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What is the effect of increasing the size of the charges on the interaction between them?

The strength of the interaction decreases

The strength of the interaction remains the same

The strength of the interaction becomes zero

The strength of the interaction increases (correct)

What is the effective nuclear charge of a 2s1 electron in the ground state of Lithium?

A charge closer to +1 (correct)

A charge closer to +2

A charge of zero

The full +3 charge of the protons

Which of the following is true about shielding by electrons in the same energy level?

They shield each other to some extent (correct)

They only shield inner electrons

They completely shield each other

They do not shield each other at all

Why does the effective nuclear charge (Zeff) decrease as the distance from the nucleus increases?

Because the electrons in inner energy levels shield the outer electrons Signup and view all the answers

What is the result of the orbital shape of certain electrons?

They penetrate close to the nucleus Signup and view all the answers

Which of the following is a result of penetration?

Electrons have a higher energy level Signup and view all the answers

What is the electron configuration of the main group s-block metals and Aluminum when they lose electrons to attain a noble gas configuration?

They lose all outer electrons with the highest n value Signup and view all the answers

Which of the following elements is known to form an anion by gaining electrons to attain a noble gas configuration?

Selenium Signup and view all the answers

What is the magnetic behavior of a species with all its electrons paired?

It is slightly repelled by a magnetic field Signup and view all the answers

What happens to the apparent mass of a paramagnetic substance when it is placed in a magnetic field?

It increases Signup and view all the answers

What is the order of electron loss in transition (d-block) metals?

ns electrons before (n-1)d electrons Signup and view all the answers

Which of the following elements exhibits paramagnetism due to the presence of unpaired electrons?

Ag (Z=47) Signup and view all the answers

Which type of orbital penetrates the nucleus the best?

s orbitals Signup and view all the answers

How does the penetration of 2p electrons compare to 2s electrons?

2p electrons have weaker penetration than 2s electrons Signup and view all the answers

Which sublevel experiences a greater attractive force to the nucleus due to deeper penetration?

2s sublevel Signup and view all the answers

In a multielectron atom, what energy order is correct for the sublevels 3p, 3s, and 3d?

3s < 3p < 3d Signup and view all the answers

What energy inversion may occur between the 4s and 3d sublevels in certain atoms?

4s < 3d Signup and view all the answers

How does nuclear attraction change with increased penetration and decreased shielding?

Nuclear attraction increases Signup and view all the answers

What is the primary purpose of indicating the value of the principal quantum number n in an electron configuration?

To identify the type of sublevel occupied by electrons Signup and view all the answers

In an orbital diagram, what does an arrow pointing up represent?

An electron with a spin up Signup and view all the answers

What is the result of paired electrons occupying the same orbital?

The attraction forces of their magnetic poles are aligned Signup and view all the answers

What is the number of electrons in the 1s sublevel in the ground state of a hydrogen atom?

1 Signup and view all the answers

What is the type of orbital that is occupied by electrons in the n = 3 level?

Only s, p, and d orbitals Signup and view all the answers

What is the purpose of writing an electron configuration?

To describe the sublevels occupied by electrons Signup and view all the answers

What is the primary characteristic of inner electrons in an atom?

They form the closed electron shells of the atom and have a much lower energy than the outer electrons. Signup and view all the answers

According to the periodic table, what is the value of n for the outermost s and p sublevels in a given period?

Period number Signup and view all the answers

What is the main reason why outer electrons are involved in chemical bonding?

They are in the highest energy level and are more easily removed. Signup and view all the answers

What is the correlation between the outer electron configuration of elements in the same group and their chemical behavior?

Similar outer electron configurations result in similar chemical behavior. Signup and view all the answers

What is the relationship between the period number and the n value of the outermost d sublevel in the periodic table?

The period number - 1 is the n value of the outermost d sublevel. Signup and view all the answers

What is the significance of the noble gas configuration in the electron configuration of elements?

It is the configuration that elements achieve when they gain or lose electrons to form ions. Signup and view all the answers

Which electron configuration is a valid possibility for helium's excited state?

1s13d1 Signup and view all the answers

How many electrons are present in the 1s orbital of a Ne atom?

2 Signup and view all the answers

Which of the following ions has a ground state electron configuration of 1s0?

He+ Signup and view all the answers