How to use the octet rule to predict the formula of the simplest compound formed from hydrogen and selenium, (Write the formula with hydrogens)?
H has 1e and needs 2.
Se has 6e and needs 8
So formula is H2Se
I don't know what the last part of your post means.
To use the octet rule to predict the formula of the simplest compound formed from hydrogen and selenium, follow these steps:
Step 1: Determine the number of valence electrons for each element:
- Hydrogen (H) has 1 valence electron.
- Selenium (Se) has 6 valence electrons.
Step 2: Determine the number of electrons needed for each element to achieve a stable octet:
- Hydrogen needs 1 more electron to achieve a stable octet.
- Selenium needs 2 more electrons to achieve a stable octet.
Step 3: Determine the total number of electrons needed for both elements:
- Hydrogen needs 1 electron.
- Selenium needs 2 electrons.
Step 4: Determine how many atoms of each element are needed:
- Since hydrogen needs 1 electron and selenium needs 2 electrons, you will need 2 hydrogen atoms for every selenium atom.
Therefore, the formula of the simplest compound formed from hydrogen and selenium, with hydrogens included, is H2Se.
To use the octet rule to predict the formula of the simplest compound formed from hydrogen and selenium, we need to consider the valence electrons of both elements.
The octet rule states that atoms tend to gain, lose, or share electrons in order to attain a stable electron configuration with eight electrons in their valence shell (except for hydrogen and helium, which are stable with two electrons).
Knowing this, we can determine the number of valence electrons for each element. Hydrogen only has one valence electron, while selenium has six valence electrons.
Since hydrogen needs one electron to achieve a stable configuration, and selenium needs two more electrons to reach eight, it becomes apparent that two hydrogen atoms can bond with one selenium atom to fulfill the octet rule for each element.
Hence, the simplest compound formed from hydrogen and selenium is Hâ‚‚Se.