Unit 2: Unit 2: Atomic Structure — Mcqs

11th Class Chemistry · Unit 2: Atomic Structure

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1.The quantum number 'm' of a free gaseous atom is associated with:

2.When 3d subshell is completely filled, the next entering electron goes into:

3.Quantum number values for 2p orbitals are:

4.An electron having the set of values: n = 4, l = 0, m = 0 and s = +1/2 lies in:

5.The quantum number values for the fourth electron of 4Be2+ atom are:

6.The correct order of first ionization energies is:

7.A p orbital has a characteristic shape with how many lobes?

8.The three p orbitals in a given energy level are oriented:

9.How many d orbitals are there in a given energy level?

10.What information does the principal quantum number (n) gives us about orbitals:

11.How many unpaired electrons are present in an atom of cobalt?

12.Square root of the frequency of X-rays is _______ atomic number:

13.Number of neutrons present in 35₁₇Cl are:

14.How many electrons are present in 32₁₆S²⁻?

15.Select isotones from the following:

16.Atoms having same atomic number but different mass number are called:

17.Atoms having same atomic mass but different atomic number are called:

18.Mass of neutron in amu is:

19.If we remove electrons from an atom until the nucleus is left, then it is called:

20.1st ionization energy is:

21.The value for (n) Principal quantum number can not be:

22.Formula for calculating the value of l (Azimuthal quantum number):

23.Number of electrons in a sub-shell can be measured by:

24.How many sub shells are present in M-shell?

25.s-subshell has _______ orbitals:

26.An orbital can accommodate how many electrons?

27.Orbitals having same energy are called:

28.The value of "m" cannot be:

29.Two electrons in the same orbital have:

30.Electronic cloud around the nucleus is uniformly distributed in all directions in _______ subshell.

31.The shape of d-orbitals are like:

32.The space orientation for f-subshell is?

33.How many d-orbitals are showing their lobes along axis?

34.If n = 3, then electrons in this shell are:

35.Subshells in an atom are filled with electrons in an increasing order of their energy values called:

36.In which subshell electrons are filled first according to n+l rule?

37.No two electrons in an atom have same all four quantum numbers, this is called:

38.Which of the following atoms show anomalous configuration?

39.An element having 14 electrons, present in______ black:

40.d-block elements are also called: