Which of the following elements is the most reactive? A. At B.Cl C.I D.Br

Chemistry

1 answer:

adell [148]2 years ago

6 0

Answer:

B. Cl.

Explanation:

These are Group 7 elements whose reactivity reduces as you go down the group. Chlorine has a smaller atoms than the rest and has a stronger tendency to grab an electron in its valency shell. This is because its nucleus is closer to the outer electrons than the other elements.

You might be interested in

Show me the periodic table

yawa3891 [41]

I think this is what you wanted, so good luck!

8 0

2 years ago

What is the correct term for the breakdown of organic sediment into phosphorous

viktelen [127]

Answer: Phosphorous Cycle

5 0

2 years ago

How many Joules of heat would be required

mote1985 [20]

Heat would be required : 1,670 J

<h3>Further explanation</h3>

Given

mass of H₂O=5 g

Required

Heat to melt

Solution

The heat to change the phase can be formulated :

Q = m.Lf (melting/freezing)

Lf=latent heat of fusion

The heat of fusion for water at 0 °C : 334 J/g

Input given values in formula :

$\tt Q=5\times 334=\boxed{\bold{1,670~J}}$

4 0

2 years ago

The thickness of a 6.00 cm square piece of Al that has a mass of .842 g and a density of 2.70 g/cm^3

lutik1710 [3]

Volume = Mass / Density
Volume = .842 / 2.70
Volume = .31185 cubic centimeters
Aluminum square * depth = .31185 cubic centimeters
6 * 6 * depth = .31185 cubic centimeters
depth = (.31185 cubic centimeters) / 36
<span><span><span>depth = 0.0086625514 centimeters

(That must be aluminum foil.)

</span> </span></span>

7 0

3 years ago

What interacted directly with the photographic plates to cause images in Becquerel’s experiment?

Anna [14]

Answer: A. uranium salt

Becquerel made a conclusion that it was the uranium that causes the images found in the photographic plates. Though his theory was disproved during the first time,he continued to develop it. Then, it is through this experiment that Becquerel discovered radioactivity.

7 0

2 years ago