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andreyandreev [35.5K]
3 years ago
5

Which statement is true about elements in a period on the periodic table?

Chemistry
2 answers:
frozen [14]3 years ago
5 0

Answer:

they have differnet properties that repeat across the next period

Explanation:

lara31 [8.8K]3 years ago
3 0

Answer: They have different properties that repeat across the next period

Explanation:

Elements are distributed in groups and periods in a periodic table.

Elements in period are arranged in order of increasing atomic numbers, thus have different valence electrons and thus have different properties.

Elements that belong to same groups will show similar chemical properties because they have same number of valence electrons.

Thus as the elements are arranged such that the elements with similar chemical properties occur after a regular interval, it is true that the elements in the period have different properties that repeat across the next period.

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*SCIENCE*
4vir4ik [10]

The correct answer is option A, that is, cooler and more rigid outer portion.

The lithosphere of the Earth comprises the crust and the uppermost mantle that forms the rigid and hard outer layer of the Earth. The lithosphere is sub-differentiated into tectonic plates. The topmost section of the lithosphere, which chemically reacts with the hydrosphere, atmosphere, and biosphere via the soil producing procedure is known as the pedosphere. The lithosphere is situated above the asthenosphere that is the hotter, weaker, and deeper component of the upper mantle.  


8 0
3 years ago
Jerry designed a coat that he thinks could keep people dry during a thunderstorm. He created a prototype that looks just like hi
AlekseyPX

Answer:

The next step is prototype testing

Explanation:

The stages of the design process are;

1) Situation analysis

Paper based research is conducted on the situation to obtain the situation parameters

2) Brief writing

With the situation analysis developed above, the brief of the current situation is put down on paper

3) Problem research

The problem is researched and experimented on with the development of a paper based proof of the possible concept

4) Specification writing

The specifications of the problem are outlined

5) List the possible solutions

The possible solutions are brainstormed and listed

6) Preferred solution selection

The preferred solution is selected based on the constraints in the situation

7) Create working drawing/plan

The working design drawing of the selected solution or concept is completed and evaluated for applicability

8) Building of a prototype

The design is converted into a prototype which is a model of the actual solution

9) Testing of the prototype

The prototype is tested for functionality, for ability to work in the intended situation and/or in the intended system

10) Report writing

A report is made on the outcome of the tests for review before production

Therefore, after the prototype is created, stage 8, the next step is the testing of the prototype stage 9.

5 0
3 years ago
What is the maximum cold holding temperature allowed for deli meat?.
Mandarinka [93]
40°F or less for deli to still be good
6 0
2 years ago
In both the Japanese and San Francisco earthquakes, fire killed more people than collapsing buildings. Why do you think this was
Bingel [31]

Answer: because it was a high level quake

Explanation:

8 0
3 years ago
Read 2 more answers
When coal goes through combustion it releases nitrogen and sulpur into the air in the form of what
katen-ka-za [31]

Answer:

Over time, the plant matter transforms from moist, low-carbon peat, to coal, All types of coal also contain sulfur, which, when burned, releases toxic air pollution. Sulfur All this coal comes from mines, which are either underground or run on diesel—a major source of air toxins, nitrogen oxide, and soot.

7 0
3 years ago
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