Visualising Orbitals

Q. The radial probability distribution curve of an orbital of $H$ has $4$ local maxima. If the orbital has $3$ angular nodes, then the orbital will be

1. 7f
2. 8f
3. 7d
4. 8d

Q. What is the quantum mechanical model of an atom in simple terms?

Q. The number of radial nodes and angular nodes for d-orbital can be represented as:

1. $(n-2)\text{radial nodes}+1\text{angular node}=(n-1)\text{total nodes}$
2. $(n-1)\text{radial nodes}+1\text{angular node}=(n-1)\text{total nodes}$
3. $(n-3)\text{radial nodes}+2\text{angular nodes}=(n-l-1)\text{total nodes}$
4. $(n-3)\text{radial nodes}+2\text{angular nodes}=(n-1)\text{total nodes}$

Q. What is the quantum mechanical model of an atom in simple terms?

Q.
The number of nodes in graph $1,2,3$ and 4 respectively are:

1. 0, 2, 1, 1
2. 1, 3, 2, 2
3. 1, 4, 3, 3
4. 1, 1, 2, 0

Q. P is the probability of finding a 1s electron of hydrogen atom in a spherical shell of infinitesimal thickness, dr, at a distance r from the nucleus. The volume of this shell is $4\pi r^{2}dr$. The qualitative sketch of the dependence of P on r is

1. 
2. 
3. 
4. 

Q. P is the probability of finding the 1s electron of hydrogen atom in a spherical shell of infinitesimal thickness, dr, at a distance r from the nucleus. The volume of this shell is $4\pi r^2$dr. The qualitative sketch of the dependence of P or r is:

1. 
2. 
3. 
4.