4
4 different 1s
217.. same as the 1s before
how many number 1s has ushe had ??
There r 16 1s. Including the word one.
5 number 1s so far
Beryllium has 2 core electrons. It has an atomic number of 4, which means it has a total of 4 electrons. The electron configuration is 1s² 2s², where the 1s² electrons are considered core electrons, while the 2s² electrons are valence electrons.
Since there are 6 numbers (1-6) on each die, and you're rolling it 5 times, the total number of possibilities is 65. You now have to find out, out of the total, how many possibilities fill your requirements. For 5 rolls of one the chance is 1/65. There are 5 possible sets of rolls where you'll get 4 1s (4 1s and a 2, 3, 4, 5, or 6). Lastly there are 25 possible sets of rolls where you'll get 3 1s (3 1s and a 2 and 2 or a 2 and 3 or a 2 and 4 etc). so adding up all the possibilities that is 31/65. That is a percentage of .4% or 4 out of 1000 rolls of all the dice you will get 3, 4, or 5 1s. Sounds like a yahtzee question.
19 of them.
42
1
1s + 1s + 1 = 2s + 1
A metalloid with 4 electrons, such as silicon, has 2 core electrons. In the case of silicon, the electron configuration is 1s² 2s² 2p², where the 1s² electrons are the core electrons, while the 2s² and 2p² electrons are considered valence electrons. Thus, it has 2 core electrons and 4 total electrons.