Term 1 Week 6 questions Grade 12 SABIS

Multiple Select

Energy of photon can be calculated

• E=hc

• E=h c/𝞴

• E=h 𝞴/c

• E=hv

Multiple Choice

Which of the following is the most electronegative element in the periodic table?

• hydrogen

• fluorine

• lithium

• helium

• chlorine

Multiple Select

Electronic configuration of Vanadium V atom

• 1s2 2s2 2p6 3s2 3p6 4s2 3d3

• 1s2 2s2 2p6 3s2 3p6 4s2

• 1s2 2s2 2p6 3s2 3p6 3d2

• 1s2 2s2 2p6 3s2 3p6 3d5

Multiple Select

Electronic configuration of Vanadium V3+

• 1s2 2s2 2p6 3s2 3p6 4s2 3d3

• 1s2 2s2 2p6 3s2 3p6 4s2

• 1s2 2s2 2p6 3s2 3p6 3d2

• 1s2 2s2 2p6 3s2 3p6 3d5

Multiple Select

The only factor affecting ionization energy when you move across the same period is

• Distance between nucleus and outermost electrons

• Nuclear charge

• The shielding effect

Multiple Select

Going across a row in periodic table from left to right , the first ionization energy of the element increases because

• The nuclear charge increases

• The shielding effect decreases

Multiple Select

Which group Element X belongs to?

• Two

• Three

• Four

• Five

Multiple Select

which one is 1s2 Orbital?

• A

• B

• C

• D

• E

Multiple Choice

on X axis when the peak has a high binding energy this means the electron is

• close to the nucleus

• far from the nucleus

• away from the nucleus

Multiple Choice

The ratio between peaks A and B is ......... , this means they have the same number of electrons

• 1:1

• 1:2

• 1:3

Multiple Select

There are three factors affecting the ionization energies when you move down the group , only two of them makes the net effect

• The average distance between the nucleus and the outermost electron increases

• The shielding effect increases leading to weaker attraction between the nucleus and the valence electrons

• The nuclear repulsions are strengthened by the protons

• The nuclear charge decreases

Multiple Select

Reasons the first ionization energy of the elements decreases as we go down a group in the periodic table

• The average distance between the nucleus and the outermost electron increases

• The shielding effect increases leading to weaker attraction between the nucleus and the valence electrons

• The nuclear attractions applied to outermost electron are weakened by the valence shells

• The nuclear repulsions are strengthened by the protons

• The nuclear charge decreases

Multiple Choice

The relationship between ions size and nuclear charge is inversely proportional

• When the number of protons increases the ionic radius is smaller

• When the number of protons increases the ionic radius is bigger

Multiple Choice

Which of the following ions has the smallest size? (ionic radius)

• Ca²⁺

• K⁺

• Cl^-

Multiple Select

Which of the following are factors that affect the magnitude of the lattice energy released when a pair of ions attract each other select all that apply?

• It is proportional to the distance between the nuclei of the two ions

• It is directly proportional to the charges of the two ions

• It is inversely proportional to the electron affinity of the anion

• It is inversely proportional to the radius of the two ions

Multiple Select

The complete spectrum of an element is shown

which of the following is consistent with the electron model of the element, select all that apply

• The electronic configuration of the element is 1s2 2s2 2p6 3s2 3p6

• The electronic configuration of the element is 1s2 2s2 2p3

• The electronic configuration of the element is 1s2 2s2 2p6 3s2 3p3

• In forming compounds the element tends to form 3- ions since it belongs to group 5

• In forming compounds the element tends to form +3 ions since it belongs to group 3

Multiple Select

Ionization energy is the energy needed to

• remove an electron

• add an electron

• from a gaseous atom or ion

• from an aqueous atom or ion

Multiple Choice

Ionization energy is the energy needed to

• remove an electron from a gaseous atom or ion

• add an electron from a gaseous atom or ion

Fill in the Blanks

Fill in the Blanks

Multiple Choice

The lowest energy configuration for an atom is the one having the maximum number of unpaired electrons in a particular set of degenerate orbitals. This is known as

• Hund's rule

• Pauli's exclusion principle

• Heisenberg principle

• Aufbau principle

Multiple Choice

no two electrons in the same atom can have identical values for all four of their quantum numbers.

• Hund's rule

• Pauli's exclusion principle

• Heisenberg principle

• Aufbau principle

Multiple Choice

According to Coloumb’s law the energy of interaction between a pair of ions is

• directly proportional to the charge of the ions and directly proportional to the distance between the ion centers

• inversely proportional to the charge of the ions and directly proportional to the distance between the ion centers

• directly proportional to the charge of the ions and inversely proportional to the distance between the ion centers

• inversely proportional to the charge of the ions and inversely proportional to the distance between the ion centers

Multiple Choice

Which of the following are properties exhibited by electromagnetic radiation ?

• Wave properties only

• Wave properties and particulate properties

• Particulate properties only

Open Ended

what kind of properties does electromagnetic radiation exhibit?

Multiple Choice

Which property of an element is most dependent on shielding effect?

• Atomic number

• Mass number

• Atomic radius

• Number of stable isotopes

• None of the above

Multiple Select

Which type of bonding is formed when electrons are shared between nuclei of two atoms?

• Ionic

• metallic

• hydrogen

• covalent

Multiple Select

Which type of bonding is formed due to electrostatic attraction between ?oppositely charged ions

• Ionic

• metallic

• hydrogen

• covalent

Multiple Select

Which type of bonding is formed due to bonding between a metal and a non metal?

• Ionic

• metallic

• hydrogen

• covalent

Multiple Choice

In general electronegativity

• increases across a period and decreases down a group

• decreases across a period and increases down a group

Multiple Choice

Polar molecules has polar bonds that

• cancel out to the value of zero

• does not cancel out