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Dafna11 [192]
3 years ago
11

In a motion diagram the size of the object must be less than the distance moved t or f

Chemistry
2 answers:
KATRIN_1 [288]3 years ago
6 0
The awnser is false.
UNO [17]3 years ago
5 0
False is the answer.
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Naturally occurring, solid substance that have a crystalline structure and a defined chemical composition are called
Stolb23 [73]
They are called minerals 
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3 years ago
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Nearly every compound of silicon has the element in the ⁺4 oxidation state. In contrast, most compounds of lead have the element
baherus [9]

Boron shows analogous behaviour with silicon. Every compound of Boron have +3 oxidation state, while as we go down the the oxidation state become +1 and +3. For example, gallium, indium, etc.

Similarly, every compound of silicon has the element in the ⁺4 oxidation state. In contrast, most compounds of lead have the element in the ⁺2 state because of inert pair effect.

<h3>What is Inert pair effect? </h3>

The inert-pair effect is defined as the tendency of two electrons in the outermost atomic s-orbital almost remain unshared in the compounds of the post-transition metals.

<h3>How we calculate Oxidation state? </h3>
  • Each atom in an element either be in its uncombined or free state has oxidation number of zero. Such as each atom in H₂, Cl₂ , P4, ,O₂ , Na, Al, O3, S8, and Mg, all have an oxidation number zero.
  • The oxidation state of ions that comprise of only one atom is the actual charge on the ion.
  • The oxidation state of hydrogen is +1, excluding when it is bonded to metals having two elements. For example, CaH2, its oxidation state is –1.
  • Fluorine and other halogens have an oxidation state equal to –1 when they appear as a form of halide ions in their compounds.

Since the inert pair effect increases as we go down the group and become more predominant, therefore, the stability of +2 oxidation state goes on increasing down the group. Therefore, gallium, indium are mostly found in +1 oxidation state.

Thus, we concluded that Boron shows analogous behaviour with silicon. Every compound of Boron have +3 oxidation state, while as we go down the the oxidation state become +1 and +3. For example, gallium, indium, etc.

learn more about oxidation state:

brainly.com/question/25551544

#SPJ4

4 0
2 years ago
Which of these is a element: Salad, Sugar, Water, or Potassium
vovikov84 [41]

Potassium is a chemical element

Symbol: K

Atomic number: 19

Atomic mass: 39.0983 u ± 0.0001 u

Electron configuration: [Ar] 4s1

Melting point: 146.3°F (63.5°C)

3 0
3 years ago
what are the three current biggest sources of electrical energy? i need to select three choices A. nuclear powerB. hydroelectric
tigry1 [53]

All of them are the current biggest sources of electrical energy.

3 of them will be explained.

------------------------

1) Natural gas:

it was the largest source, 38 % approx., of the USA electricity generation. It is used in steam turbines and gas turbines to generate electricity.

----------------------

2) Nuclear energy:

It was the source of 19% of the U.S. electricity generation in 2021. Nuclear power plants use steam turbines to produce electricity from fission.

---------------------

3) Coal power:

It was the 2nd.-largest energy source for US electricity generation in 2021.

5 0
1 year ago
How many atoms is in 1 molacule of uranium?
Minchanka [31]

Answer:

One mole of U238 ( 6.022 X 10^23 atoms) is 238 grams; one mole of U235 is 235 grams. The difference in molecular weight between a mole of U235 and U238 is 3 grams, the secret to enriching uranium.

Explanation:

4 0
3 years ago
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