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d1i1m1o1n [39]
3 years ago
14

In the third period of the periodic table, sodium is followed by magnesium, aluminum, silicon, and phosphorus. Which of these el

ements has the smallest atomic size?
A. sodium

B. magnesium

C. aluminum

D. silicon

E. phosphorus
Chemistry
2 answers:
AURORKA [14]3 years ago
6 0

Answer:

phosphorus

Explanation:

77julia77 [94]3 years ago
3 0

Answer:-

Phosphorus

Explanation:-

In the third period among the elements given, phosphorus is at the most right side among them in the periodic table.

We know that as we go from left to right in the periodic table, the atomic size decreases due to the increase in nuclear charge.

Hence phosphorus is the smallest among them

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matrenka [14]

Democritus developed the atomic model. He theorized that atoms were specific to the material which they composed. He also believed that the atoms different in size and shape, were in constant motion in a void, collided with each other; and during these collisions, could stick together.

6 0
3 years ago
Which isotope has the greatest number of protons?
tino4ka555 [31]

Answer:

The isotope with the greatest number of protons is:

  • <u>option D:  Pu-239, with 94 protons</u>

Explanation:

The number of <em>protons</em> is the atomic number and is a unique number for each type of element.

You can tell the number of protons searching the element in a periodic table and reading its atomic number.

Thus, this is how you tell the number of protons or each isotope

Sample       Chemical symbol  Element       atomic number   # of protons

A Pa-238       Pa                         protactinium         91                        91

B U-240         U                          uranium                 92                       92

C Np-238       Np                        neptunium            93                       93

D Pu-239        Pu                        plutonium              94                       94

8 0
3 years ago
Apples reproduce naturally by sexual reproduction.How does this explain why there are many types of apples be sure to use use me
kvasek [131]

Answer:

could be a that the apple produced a seed with genetic mutation in chromosome during the process meiosis.

Explanation:

6 0
2 years ago
The actual yield of a certain reaction is 44.0 g, while the theoretical yield is 50.0 g. Calculate the percent yield.
Goshia [24]
Percent yield represents to what extent the reaction runs to completion. In this, the theoretical yield is 50 grams (100% completion).

To calculate percent yield, divide the actual by the theoretical. In doing so, the percent yield is 88% (44/50).
3 0
3 years ago
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tia_tia [17]
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An example of a chemical reaction is when the cells within completely change. You you burn wood, you can't go back in time and un-burn it. Does that make sense?
8 0
3 years ago
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