All categories

3 years ago

FILL IN THE BLANK an elements __________ is its row in the periodic table

Chemistry

2 answers:

Kipish [7]3 years ago

6 0

elements are classified into rows and columns in the periodic table.

Elements are arranged in the increasing order of the atomic number

elements with same number of valence electrons fall into the same column. these columns are called groups.

elements having the same amount of outermost energy shells fall into the same row. These rows are called periods.

therefore elements where the highest energy electron is in the second energy shell belongs to period 2

and elements with highest energy electron is the third energy shell belongs to period 3 and so on.

Therefore rows represent the periods of elements

answer is an elements period is its row in the periodic table

Sedaia [141]3 years ago

3 0

The question is asking to complete the said statement that is all about the element in the periodic table and base on my research and further investigation, I would say that the answer would be a Period. I hope you are satisfied with my answer and feel free to ask for more

You might be interested in

If you throw a ball into the air, the force of ________ makes the ball fall back toward Earth.

Tanya [424]

Acceleration is when something is being moved forward or back, motion is just movement, friction is two or more things rubbing together, so the answer should be B. gravity

6 0

3 years ago

Read 2 more answers

4.00 g of sodium and 2.00 g of oxygen react according to the following balanced equation 4 Na + O2 → 2 Na2O Calculate the mass o

posledela

6.00g because it is a balanced equation

6 0

3 years ago

Which particle j j Thomson discovered

nikdorinn [45]

Sir Joseph John Thomson OM PRS (18 December 1856 – 30 August 1940) was a British physicist and Nobel Laureate in Physics, credited with the discovery of the electron, the first subatomic particle to be discovered.

5 0

3 years ago

Read 2 more answers

Does the amount of methanol increase, decrease, or remain the same when an equilibrium mixture of reactants and products is subj

denis23 [38]

Answer:

a. Methanol remains the same

b. Methanol decreases

c. Methanol increases

d. Methanol remains the same

e. Methanol increases

Explanation:

Methanol is produced by the reaction of carbon monoxide and hydrogen in the presence of a catalyst as follows; 2H2+CO→CH3OH.

a) The presence or absence of a catalyst makes no difference on the equilibrium position of the system hence the methanol remains constant.

b) The amount of methanol decreases because the equilibrium position shifts towards the left and more reactants are formed since the reaction is exothermic.

c) If the volume is decreased, there will be more methanol in the system because the equilibrium position will shift towards the right hand side.

d) Addition of helium gas has no effect on the equilibrium position since it does not participate in the reaction system.

e) if more CO is added the amount of methanol increases since the equilibrium position will shift towards the right hand side.

3 0

3 years ago

Using only the periodic table, determine the element that displays each given trend. Be sure to provide your reasoning.

RideAnS [48]

Choose the element that:

- is more reactive: oxygen or argon.

- has the larger atomic radius: francium or sodium.

- has the smaller atomic radius: scandium or selenium.

- has more ionization energy: bismuth or mercury.

- has less ionization energy: nitrogen or phosphorus.

- has more electronegativity: xenon or silver.

- has less electronegativity: titanium or hafnium.

Explanation:

Choose the element that is more reactive: oxygen or argon.

Argon have a complete electronic shell which makes him inert from chemically point of view while oxygen is able to form compounds with the majority of the elements.

Choose the element that has the larger atomic radius: francium or sodium.

As you go down in a group the atomic radius is increasing.

Choose the element that has the smaller atomic radius: scandium or selenium.

As a general trend the atomic radius of elements decrease in periods from right to left for this elements .

Choose the element that has more ionization energy: bismuth or mercury.

Mercury have a complete electronic shell (5d¹⁰) while bismuth have 3 electrons in the last shell (6p³). It is harder to extract an electron from mercury compared to bismuth.

Choose the element that has less ionization energy: nitrogen or phosphorus.

Ionization energy decrease as you go down in a group.

Choose the element that has more electronegativity: xenon or silver.

Silver have a higher electronegativity than Xenon. Xenon is an inert gas and it has a complete electronic shell which explains his inert chemical reactivity.

Choose the element that has less electronegativity: titanium or hafnium.

As you go down a grup electronegativity is decreasing.

Learn more about:

trends in periodic table:

brainly.com/question/2293240

brainly.com/question/4433739

brainly.com/question/3266672

#learnwithBrainly

3 0

3 years ago