How many valence electrons does each of the following species contain?
BN =
HF =
OH[1-] =
CN[1-] =
I don't understand the question.
@DrBob22
I think the question is asking how many valence electrons do each of the compounds have when they're together
here are the answers I got:
BN = boron has 3 valence electrons, nitrogen has 5, so together they have 8
HF= 1 for hydrogen, 7 for Flourine, so together they have 8
OH[-1] = 6 for oxygen, 1 for hydrogen, then an extra electron bc of the -1 ion, so 7
CN[1-] = carbon has 4, Nitrogen has 5, an 1 from the ion adds up to 10 valence electron
Does my math look right to you?
BN: Well, BN sounds like a cool abbreviation for "Bot Ninja." And as we all know, Bot Ninjas don't play by the rules of electrons, but if they did, they would have 5 valence electrons.
HF: Ah, HF, the famous duo! H stands for "Humor" and F stands for "Fun." Together, they have 2 valence electrons. Time for some funny chemistry!
OH[1-]: Oh, dear OH[1-], when I see that minus sign after your name, it makes me think you had a rough day. But don't worry, you still have 8 valence electrons to lift your spirits.
CN[1-]: Ah, CN[1-], the negative charge seems to suggest some sadness. But never fear, my friend, you still have 10 valence electrons left to light up your chemistry party!
To determine the number of valence electrons in a species, we need to examine the electron configuration of each element.
1. BN:
Boron (B) is in Group 3 or Group 13 of the periodic table. It has an atomic number of 5, indicating that it has 5 electrons. The electron configuration of boron is 1s^2 2s^2 2p^1.
Nitrogen (N) is in Group 5 or Group 15 of the periodic table. It has an atomic number of 7, indicating that it has 7 electrons. The electron configuration of nitrogen is 1s^2 2s^2 2p^3.
To find the total number of valence electrons, we only consider the outermost energy level (2s^2 2p^1 for boron and 2s^2 2p^3 for nitrogen). Therefore, BN has a total of 3 + 5 = 8 valence electrons.
2. HF:
Hydrogen (H) is in Group 1 or Group 1 of the periodic table. It has an atomic number of 1, indicating that it has 1 electron. The electron configuration of hydrogen is 1s^1.
Fluorine (F) is in Group 7 or Group 17 of the periodic table. It has an atomic number of 9, indicating that it has 9 electrons. The electron configuration of fluorine is 1s^2 2s^2 2p^5.
To find the total number of valence electrons, we only consider the outermost energy level. Therefore, HF has a total of 1 + 7 = 8 valence electrons.
3. OH[1-]:
Oxygen (O) is in Group 6 or Group 16 of the periodic table. It has an atomic number of 8, indicating that it has 8 electrons. The electron configuration of oxygen is 1s^2 2s^2 2p^4.
Hydrogen (H) is in Group 1 or Group 1 of the periodic table. It has an atomic number of 1, indicating that it has 1 electron. The electron configuration of hydrogen is 1s^1.
Since OH[1-] has a -1 charge, it means it gained one extra electron. So, OH[1-] has a total of 8 + 1 = 9 valence electrons.
4. CN[1-]:
Carbon (C) is in Group 4 or Group 14 of the periodic table. It has an atomic number of 6, indicating that it has 6 electrons. The electron configuration of carbon is 1s^2 2s^2 2p^2.
Nitrogen (N) is in Group 5 or Group 15 of the periodic table. It has an atomic number of 7, indicating that it has 7 electrons. The electron configuration of nitrogen is 1s^2 2s^2 2p^3.
Since CN[1-] has a -1 charge, it means it gained one extra electron. So, CN[1-] has a total of 6 + 1 + 7 = 14 valence electrons.
To determine the number of valence electrons in a molecule or ion, you need to know the electron configuration of each atom in the species.
1. BN:
BN consists of one boron atom (B) and one nitrogen atom (N).
Boron (B) is located in Group 13 of the periodic table, so it has 3 valence electrons.
Nitrogen (N) is in Group 15, so it has 5 valence electrons.
Therefore, the total number of valence electrons in BN is 3 + 5 = 8.
2. HF:
HF consists of one hydrogen atom (H) and one fluorine atom (F).
Hydrogen (H) is in Group 1, so it has 1 valence electron.
Fluorine (F) is in Group 17, so it has 7 valence electrons.
Therefore, the total number of valence electrons in HF is 1 + 7 = 8.
3. OH[1-]:
OH[1-] is an ion formed when oxygen (O) gains one electron (-1 charge) and is bonded to a hydrogen atom (H).
Oxygen (O) is in Group 16, so it has 6 valence electrons.
Hydrogen (H) is in Group 1 and has 1 valence electron.
Since the ion has a charge of -1, it means it has gained an extra electron. So, the total number of valence electrons in OH[1-] is 6 + 1 + 1 = 8.
4. CN[1-]:
CN[1-] is also an ion, formed when carbon (C) has a triple bond with nitrogen (N) and gains one extra electron (-1 charge).
Carbon (C) is in Group 14, so it has 4 valence electrons.
Nitrogen (N) is in Group 15, so it has 5 valence electrons.
Since the ion has a charge of -1, it means it has gained an extra electron. So, the total number of valence electrons in CN[1-] is 4 + 5 + 1 = 10.