Trends in MPT

Q.

The element with least ionization energy in group 1 is Caesium.

1. False

2. True

Q.

The correct order of second ionization potential of carbon, nitrogen, oxygen and fluorine is:-

1. O > N > F > C

2. O > F > N > C

3. F > O > N > C.

4. C > N > O > F

Q.

Which one of the following elements has the least ionisation energy?

1. Na

2. K

3. Cs

4. Li

Q. Periodic properties of elements refer to the properties recurring at regular intervals.

1. True
2. False

Q.

Which amongst the following elements have the lowest number of electrons in the valence shell ?

1. Oxygen

2. Chlorine

3. Nitrogen

4. Boron

Q. According to modern periodic law, the properties of elements are a periodic function of their

1. atomic masses
2. atomic volumes
3. densities
4. atomic numbers

Q.

The correct increasing order of first ionisation energy is:

1. Na < K < Al < Mg

2. K < Na < Mg < Al

3. K < Na < Al < Mg

4. K < Mg < Al < Na.

Q.

The first ionization potential of Na, Mg, Al and Si are in the order:

1. Na < Mg > Al < Si

2. Na >Mg>Si>Al

3. Mg > Na > Al > Si

4. Na > Al > Mg > Si.

Q.

The energy required to remove an electron from an isolated gaseous atom is called __ energy.

Q.

The electron affinities of N, O, S and Cl are :

1. N < O < S < Cl

2. O < N < Cl < S

3. O = Cl < N = S

4. O < S < Cl < N.