The first shell (K shell) can hold up to 2 electrons, the second shell (L shell) can hold up to 8 electrons, the third shell (M shell) can hold up to 18 electrons, and the fourth shell (N shell) can hold up to 32 electrons.
According to one of Lewis' theories, each shell has a maximum number of electrons using the formula 2n2 where n = the shell number. For example: 1st shell = 2(1)2 = 2 electrons maximum; 2nd shell = 2(2)2 = 8 electrons maximum.
An atom with 16 electrons would have 3 electron shells. The first shell can hold up to 2 electrons, the second shell can hold up to 8 electrons, and the third shell can hold up to 8 electrons.
In the first shell there are two electrons and in the second shell there are six electrons, but only the electrons in the second (outer) shell are valence electrons.
Bromine has 7 electrons in it's outer shell. It can hold eight so, it needs 1 more electron. The answer above is is probably the answer expected, however as the the question says outer shell which sometimes is used to refer to the highest principal quantum number, in bromines case 4, the answer could be 25, as the fourth shell can hold 32 electrons.
Shell 1: Two electrons Shell 2: Eight electrons Shell 3: Eight electrons Shell 4: Eighteen electrons
20 electrons would need 4 shells. The first shell can hold up to 2 electrons, the second shell can hold up to 8 electrons, the third shell can hold up to 18 electrons, and the fourth shell can hold up to 32 electrons.
The first shell (K shell) can hold up to 2 electrons, the second shell (L shell) can hold up to 8 electrons, the third shell (M shell) can hold up to 18 electrons, and the fourth shell (N shell) can hold up to 32 electrons.
there are two electrons the first shell hold
According to one of Lewis' theories, each shell has a maximum number of electrons using the formula 2n2 where n = the shell number. For example: 1st shell = 2(1)2 = 2 electrons maximum; 2nd shell = 2(2)2 = 8 electrons maximum.
there are two electrons the first shell hold
The fourth principal shell (n=4) can hold a maximum of 32 electrons. Cadmium has an atomic number of 48, so it has 48 electrons distributed across various energy levels/shells. Therefore, in the fourth principal shell of a cadmium atom, there are 32 electrons.
The fourth shell has 4 subshells, which are labeled s, p, d, and f. The s subshell can hold a maximum of 2 electrons, the p subshell can hold a maximum of 6 electrons, the d subshell can hold a maximum of 10 electrons, and the f subshell can hold a maximum of 14 electrons.
First Shell always has 2 electrons. Second shell onwards can have up to a maximum of 8 electrons.
The M shell can hold a maximum of 18 electrons. This shell consists of three subshells: 3s, 3p, and 3d. The 3s subshell can hold up to 2 electrons, the 3p subshell can hold up to 6 electrons, and the 3d subshell can hold up to 10 electrons.
The K shell of an atom can hold up to 2 electrons.
The third electron shell can hold a maximum of 18 electrons.