16
Explanation:
The subatomic particles in any atom are made up of protons, neutrons and electrons in it.
Protons are the positively charged particles.
Neutrons do not carry any charges.
Together with protons, they occupy the nucleus.
Electrons are negatively charged particles.
In an atom of B - 11;
11 is the mass number
mass number = number of protons + number of neutrons.
Total subatomic particles = proton + neutrons + electrons
TSP = mass number + electrons
In B, the atomic number = 5 = number of electrons
TSP = 11 + 5 = 16
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Atomic number brainly.com/question/5425825
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In case you're in hurry:
Ans: 26 valence electrons
Explanation:To find the valence electrons, we need to add the valence electrons of the individual atom in the compound. Therefore, let us divide this question into 3 parts.
1) What is the number of valence electrons of Arsenic (As)?
2) What is the number of valence electrons of Oxygen (O)?
3) What is the total number of valence electrons of
1.
The number of valence electrons of Arsenic(As) = 5
2.
The number of valence electrons of Oxygen (O) = 6
3.
Since there are 3 atoms of Oxygen, and 3 extra electrons are also present in the shape of "3-", as it is an ion, therefore,
The total number of valence electrons of
= 5 + 6 * 3 + 3 =
26 valence electrons.
Ans: The total number of valence electrons in = 26.
-i
Answer:
CH3Br ( Methyl Bromide )
Explanation:
H9 C3 Br3 => rewrite as: C3H9Br3 => actually, this is 3 moles of molecule CH3Br !
C3H9Br3 ~ 3( CH3Br)
I hope this answer can help you. Have a nice day!
This type interaction is called the London dispersion force. These are temporary forces that happens when electrons of two adjacent atoms occupy positions that will result to temporary dipoles. The constant motion of the electrons will cause to form an instantaneous dipole when the electrons are unsymmetrically distributed. These forces are present in nonpolar substances.
For #1, we can show conservation of mass stoichiometrically converting the starting amount of reactants into the final amount of products
For instance 2H2O2 —> 2H2O + O2
If we start with 70g H2O2,
our theoretical yield of H2O~ 37g
Our theoretical yield of O2~ 33g
So 70g = 37g + 33g
For #2, an Acid-base reaction always forms a salt and water. For instance,
HCl + NaOH —> H2O + NaCl
This is called neutralization and I would think that Chemical properties would be different, as well as the physical properties.