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2 years ago

• An element in group 2, period 4 has similar properties with

Chemistry

1 answer:

babymother [125]2 years ago

7 0

Answer: Elements in Group 2

Explanation: The periodic table was arranged by Dmitri Mendeleev specifically around similarites in their chemical behaviors. He found that as atomic number increases, at some point an element starts to react in a manner similar to a previous one. When that happened, he would place the larger element under the smaller one, and eventually noticed a periodicity in the table. Elements in a column (Groups) had similiar chemical properties. We know today that these similarities are due to the electron configuration, and that these configurations repeat themselves. He left gaps in the table when he could find an existing element with properties similar to others in that group. I big leap of faith, but it worked. Elements for those missing boxes were eventually discovered.

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What are destiny dependent factors

pochemuha

Answer:

Density dependent factors include disease, competition, and predation. Density dependant factors can have either a positive or a negative correlation to population size

Explanation:

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3 years ago

Read 2 more answers

Give the chemical symbols for the following elements: (a) potassium, (b) tin, (c) chromium, (d) boron,(e) barium, (f) plutonium,

Ilia_Sergeevich [38]

Answer:

A) Alkili Metal

B) Basic Metal

C) Transition Metal

D) Semimetal

E) Alkiline Earth

F) Actinide

G) Nonmetal

H) Noble Gas

I) Transitional Metal

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8 0

4 years ago

xidation in redox reactions involves a. a loss of electrons and an increase in the oxidation number b. a gain of electrons and a

Strike441 [17]

Answer:

Option a is the right one

Explanation:

Redox reactions are defined as the reactions where one element is oxidized (so the oxidation state is increased); and another element is reduced (oxidation state decreases). These changes in the oxidations states are defined by a transference of electrons.

When the oxidation state decrease → reduction → the element gains electrons

When the oxidation state increase → oxidation → the element release electrons

4 0

3 years ago

A gas occupies 2.50 L at 1.5 atm. What will be the volume of this gas if the

sashaice [31]

Answer:

2.08 L

Explanation:

$V_{2} = V_{1}$ $(\frac{P_{2} }{P_{1} })$

= 2.50L × $(\frac{1.25 atm}{1.5 atm} )$

=2.08L

8 0

2 years ago

What are the elements that make up the compound, and what are some properties of these elements?

nekit [7.7K]

Answer: Below (=

Explanation:

The properties of a compound depend not only on which atoms the compound contains, but also on how the atoms are arranged. Atoms of carbon and hydrogen, for example, can combine to form many thousands of different compounds.

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2 years ago