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kramer
3 years ago
12

What substances is a liquid at room temperature

Chemistry
2 answers:
Vesnalui [34]3 years ago
6 0

Answer:

Only two elements are liquid at standard conditions for temperature and pressure: mercury and bromine. Four more elements have melting points slightly above room temperature: francium, caesium, gallium and rubidium.

Explanation:

guapka [62]3 years ago
5 0

Answer:

Explanation:

Only two elements are liquid at standard conditions for temperature and pressure: mercury and bromine. Four more elements have melting points slightly above room temperature: francium, caesium, gallium and rubidium.

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Need help asap!
Scilla [17]

Answer: 1.  C. polar covalent: electrons shared between silicon and sulfur but attracted more to the sulfur

2. B)  NH_3

3. B) Fluorine

Explanation:

1. A polar covalent bond is defined as the bond which is formed when there is a difference of electronegativities between the atoms.

Electronegativity difference = electronegativity of sulphur- electronegativity of silicon = 2.5 -1.8 = 0.7

Thus as electronegativity difference is less than 1.7 , the cond is polar covalent and as electronegativity of sulphur is more , the electrons will be more towards sulphur.

2. A molecular compound is usually composed of two or more nonmetal elements. Example: NH_3

Ionic compound is formed by the transfer of electrons from metals to non metals. Example: Mg_3N_2 , AlCl_3 and LiBr

3.  For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

Here K is having an oxidation state of +1 and as the compound formed is KZ, the oxidation state of non metallic element Z should be -1. Thus the element Z is flourine which exists as diatomic gas F_2

4 0
2 years ago
A nearly complete skeleton, ____ is a classic example of a Neanderthal with many defining Neanderthal characteristics. Group of
Ostrovityanka [42]

Answer:  La Ferrassie 1

Explanation: La Ferrassie 1, often referred to as LF1, is a male Neanderthal skeleton estimated to be 70–50,000 years old. It was discovered at the La Ferrassie site in France by Louis Capitan and Denis Peyrony in 1909. The skull is the most complete Neanderthal skull ever found.

4 0
2 years ago
Two elements in the same period have the same number of _____ _____ in their electron clouds.
shutvik [7]

Answer:

outer electrons

Explanation:

3 0
3 years ago
Read 2 more answers
What is an energy source produced from nuclear reactions
valkas [14]

Answer:

I believe it would be electricity.

Explanation:

6 0
3 years ago
Describe one major change that occured in the modern atomic model
aleksley [76]

the modern atomic model shows that electrons are located in a predicted area but cannot be identified in a specific point

Hope this helps :)

7 0
3 years ago
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