Each orbital can contain a maximum of 2 electrons only different in their spin momentum: +1/2 and -1/2.
The 4s orbital is fully 'used' from Ca (no.20) onward: 1s2 2s2 2p6 3s2 3p6 4s2
The 4s2 suborbital quantum numbers are: (s for spin direction: CW or CCW)
n=4, m=0, l=0, s= +1/2, or n=4, m=0, l=0, s= -1/2.
If it is in row 4 (4th period) it has 4 energy levels occupies. In the 2nd column (group 2A) it has 2 valence electrons. You ask how many orbitals it has. It has s and p orbitals. Is that what you mean? The configuration is 1s2 2s2 2p6 3s2 3p6 4s2 so there are 3 s orbitals and 6 p orbitals for a total of 9 orbitals.
The "formula" is n2 - so for principal quantum number 4 there are 16 orbitals, correspnding to one X s orital, three X p orbitals, five X d orbitals, seven X f orbitals.
The 3rd period contains 2 of the 3 orbitals for the third sublevel. It has the s and p orbitals in it.
2
sp hybrid orbitals are literally a hybrid of the S and P orbitals. in P block atoms that have 4 distinct bonds or non bonding pairs of electrons the valence electrons organize into 4 sp hybrid orbitals that point out from the nucleus like the points of a tetrahedron.
There are 4 orbitals in H2O , one s and 3 p
If it is in row 4 (4th period) it has 4 energy levels occupies. In the 2nd column (group 2A) it has 2 valence electrons. You ask how many orbitals it has. It has s and p orbitals. Is that what you mean? The configuration is 1s2 2s2 2p6 3s2 3p6 4s2 so there are 3 s orbitals and 6 p orbitals for a total of 9 orbitals.
4
If the question is an attempt to ask "How many orbitals are there with principal quantum number n = 2", then 4 orbitals which can hold a total of 8 electrons.
The "formula" is n2 - so for principal quantum number 4 there are 16 orbitals, correspnding to one X s orital, three X p orbitals, five X d orbitals, seven X f orbitals.
16 orbitals
one
2
5
4
There are four types of orbitals in the sixth shell: s, p, d, and f orbitals. The s orbital is spherical, the p orbitals are dumbbell-shaped, the d orbitals are cloverleaf-shaped, and the f orbitals have more complex shapes. Each type of orbital can hold a specific number of electrons.
The 3rd period contains 2 of the 3 orbitals for the third sublevel. It has the s and p orbitals in it.