What is the formula of the compound formed between the potassium ion and the sulfide ion?
Answers
Potassium sulphide has the chemical formula S .
What do you mean by Chemical formula ?
A chemical formula is a phrase that lists the constituent parts of a compound together with their relative proportions. No subscript is used if there is just one atom of a certain kind.
Alkali metals in Group 1A produce plus-one ions because they wish to give up their valence electron in their outer shell.
In order to have a complete octet in its outermost shell, sulphur, which is found in the chalcogens, needs to gain two electrons.
Thus, Potassium sulphide has the chemical formula S .
To learn more about Chemical formula, refer to the below link:
# SPJ2
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Answers
The mass of 3.0 x 10^23 atoms of neon would be 10.09 g
According to Avogadro;
1 mole of neon would have 6.022 x 10^23 atoms
3.0 x 10^23 atoms of neon would have:
3.0 x 10^23/6.022 x 10^23
= 0.5 moles
mass of 0.5 moles neon = mole x molar mass
= 0.5 x 20.18
= 10.09 g
More on Avogadro number can be found here: brainly.com/question/1445383?referrer=searchResults
Answer: The mass of neon for the given number of atoms will be 9.8 g.
Explanation:
We are given:
Number of neon atoms =
According to the mole concept:
number of atoms. are occupied in 1 mole of a substance.
So, will be occupied in =
To calculate the number of moles, we use the equation:
Moles of Neon = 0.49 moles
Molar mass of neon = 20 g/mol
Putting values in above equation, we get:
Hence, the mass of neon for the given number of atoms will be 0.49g.
B. The greater the dipole moment, the stronger the dipole-dipole forces.
C. The polarizability of elongated molecules is greater than that of compact, more spherical molecules.
D. London dispersion forces weaken in the order Xe < Kr < Ar
E. Hydrogen bonding leads to the strongest intermolecular forces.
Answers
Answer:
D. London dispersion forces weaken in the order Xe < Kr < Ar is an incorrect order, the correct order of London dispersion forces weaken in the order Ar < Kr < Xe.
Explanation:
A. Dispersion forces are present in all molecular substances.
is a correct statement London dispersion forces are weak intermolecular forces found in all molecular substances.
B. Clearly, greater the dipole moment, greater will be dipole-dipole forces. Hence true.
C) The polarizability of elongated molecules is greater than that of compact, more spherical molecules. The more elongated the molecule is more will be its ability to get polarized.
D. London dispersion forces weaken in the order Xe < Kr < Ar is an incorrect order, the correct order of London dispersion forces weaken in the order Ar< Kr < Xe.
E) Hydrogen bonding leads to the strongest intermolecular forces is also a correct statement. Hydrogen bonding leads to increase in boiling point.
True
False
Answers
Answer:
It's true I got it wrong.
Explanation:
Answers
Answer:
The more polar the molecules, the stronger the force. The more hydrogen in the molecule, the stronger the force.
Explanation:
I hope this helps and please ask if you need further help!
b. They contain younger stars and more gas and dust.
c. They are bigger than spiral galaxies.
d. They are smaller than spiral galaxies.
Answers
Answer:
A. They contain older stars and less gas and dust.
Explanation:
There are three types of galaxies:
- elliptical galaxies
- spiral galaxies
- lenticular galaxies
Elliptical galaxies are galaxies shaped like an ellipse, while spiral galaxies consist of a flat, rotating disk that contains stars, gas, and dust, and a central concentration of stars called the bulge.
The difference between elliptical and spiral galaxies is in the amount of gas and dust they contain. Spiral galaxies contain large amounts of gas and dust, which means that new stars are born very often. This makes them brighter than relatively dim elliptical galaxies, which contain less gas and dust. This is why fewer new and brighter stars are born in elliptical galaxies, leaving them with older, dimmer stars.
Answers
Which of the following elements has the greatest electron affinity among the halogens?
Answer: A. Chlorine