Question

How many electron in an atom with atomic number 30 can have (n + 1)=4?

Answer 1

Answer:

30 electron

Explanation:

The atomic number of an atom is the number of electron present in that atom.So there the atomic number of atom is 30 then it has 30 electrons

Answer 2

Correct Question:

How many electrons in an atom with atomic number 30 can have (n+l) = 4?

Correct Answer:

The no of electrons in an atom with atomic number 30 that can have (n+l)=4 is Eight (8).

- The electronic configuration of the atom is:

1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰

- We know that:

n = principal quantum number.

l = azimuthal quantum number.

- The (n + l) value for all the subshells are:

1s = 1 + 0 = 1

2s = 2 + 0 = 2

2p = 2 + 1 = 3

3s = 3 + 0 = 3

3p = 3 + 1 = 4

4s = 4 + 0 = 4

3d = 3 + 2 = 5

- So, there are only 2 subshells (3p and 4s) with (n+l) = 4

- 3p has 6 and 4s has 2 electrons.

- So, the total number of electrons = 6 + 2 = 8