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3 years ago

As the atoms of the Group 17 elements in the ground state are considered from top to bottom, each successive element has

Chemistry

2 answers:

Lelu [443]3 years ago

8 0

Answer: Option (1) is the correct answer.

Explanation:

As each element of group 17 has 7 valence electrons. Therefore, they tend to show same type of reactivity.

And, when they react with another element then they tend to show a change in their chemical composition.

As a result, we can say that elements of group 17 show similar chemical properties due to the presence of same number of valence electrons.

Thus, we can conclude that as the atoms of the Group 17 elements in the ground state are considered from top to bottom, each successive element has the same number of valence electrons and similar chemical properties.

VladimirAG [237]3 years ago

4 0

<span> elements in the same group have the same valence electrons. So it is either A or C. elements in the same group don't have identical chemical properties because the valence electrons are in different energy levels. So it should be A. same number of valence electrons and similar chemical properties.</span>

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You push on the side of a toy truck rolling along the floor. What will happen to the motion of the truck?

sergeinik [125]

Answer:

The direction will be changed .

Explanation:

According to the principles of motion, if an object is moving with solitary velocity and if an external force is applied to it, then that force changes the position, speed, and direction of that object.

In the given question, an external force is being applied to the toy which will change the direction of that toy.

3 0

3 years ago

Write the balanced net reaction for the following half cells: <br> Sn2+ / Sn<br> Cr2+ / Cr

GuDViN [60]

The balanced net reactiion for the following half cells will be

Sn + Cr²⁺ ---> Sn²⁺ + Cr

<h3>What are Half cells ?</h3>

A half cell is one of the two electrodes of an electrochemical cell.

An electrochemical cell comprises two half cells, where every half cell contains an electrode and an electrolyte.

A salt bridge or direct contact is needed to connect two half cells.

The balanced net reactiion for the given half cells will be

Sn + Cr²⁺ ---> Sn²⁺ + Cr

Learn more about Half cell here ;

brainly.com/question/1313684

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4 0

2 years ago

The elemental analysis of an organic solid extracted from gum arabic (a gummy substance used in adhesives, inks, and pharmaceuti

Evgesh-ka [11]

Answer:

The molar mass of the organic solid is 120.16 g/mol.

The molecular formula of an organic solid is $C_4H_8O_4$

Explanation:

Let the molecular mass of an organic solid be $C_xH_yO_z$

$\Delta T_b=K_b\times m$

$Delta T_b=K_b\times \frac{\text{Mass of solid}}{\text{Molar mass of solid}\times \text{Mass of diphenyl in Kg}}$

where,

$\Delta T_f$ =Elevation in boiling point = $=1.5^oC$

Mass of organic solid= 0.561 g

Mass of diphenyl = 24.9 g = 0.0249 kg (1 kg = 1000 g)

$K_b$ = boiling point constant = 8.00 °C/m

m = molality

Now put all the given values in this formula, we get

$1.5^oC=8.00 ^oC/m\times \frac{0.561 g}{\text{Molar mass of solid}\times 0.0249 kg}$

${\text{Molar mass of solid}}=120.16 g/mol$

$\%=\frac{\text{Number of atoms}\times \text{mass of an atom}}{\text{molas mass of compound}}\times 100$

Percentage of carbon in an organic solid = 40.0%

$40\%=\frac{x\times 12 g/mol}{120.16 g/mol}\times 100$

x = 4.0

Percentage of hydrogen in an organic solid = 6.7%

$6.7\%=\frac{y\times 1 g/mol}{120.16 g/mol}\times 100$

y = 8.0

Percentage of hydrogen in an organic solid = 6.7%

$53.3\%=\frac{x\times 12 g/mol}{120.16 g/mol}\times 100$

y = 4.0

The molecular formula of an organic solid is $C_4H_8O_4$

8 0

3 years ago

Based on your answer in part B, arrange the five elements in order of their reactivity. Drag the most reactive element to the to

amm1812

Answer: Order of the elements from most reactive to least reactive is:

Mg > Zn > Fe > H > Cu

Explanation: Reactivity of the elements is the tendency of the elements to loose or gain electrons with ease.

As, all the given elements are metals, so the metals which will loose electrons easily will be more reactive. To study the reactivity of metals, we use reactivity series.

The metals which are more reactive are placed on the top of the reactivity series and which are less reactive are placed at the bottom.

Hence, the order of the elements from most reactive to least reactive is:

Mg > Zn > Fe > H > Cu

Reactivity series is attached below.

6 0

3 years ago

a liquid that boils at a low temperature and evaporates rapidly at room temperature is describe as being

Sunny_sXe [5.5K]

Answer: Volatile

Explanation:

like ethanol(alcohol) it evaporates when you put it in the hand, really fast.

Some people think that it dries when it really evaporated at room temperature from liquid to gas

5 0

3 years ago