All categories

4 years ago

1. How does the period (row) in which an element is located relate to the number of shells that contain electrons?

1 answer:

4 0

1. The period number tells us about the number of shells in an element(for example Na located in third period has three electron shells)

2. Group number tells us the amount of electrons present in the valence shell thus also tells us about the ionic charges they form

3. They all have a stable electronic configuration with complete valence shells hence they also don't form ions.

You might be interested in

Find the number of molecules and number of each type of atom of 0. 04 moles of H2C2O4

Galina-37 [17]

answer

Explanation: i think 0.49

3 0

2 years ago

Which would be best categorized as heat transfer by conduction? A) Wearing a white shirt to stay cool on a summer day. B) Warmin

erik [133]

Answer:

Conduction is heat transfer through the direct contact of two subjects. The best example of this would be C, because it is the direct transfer of heat from the lightbulb to your hand. :)

6 0

3 years ago

Give a reason why ammonium salts are formed when Ammonia reacts with dilute acids in the gaseous or aq. medium.

SpyIntel [72]

Answer:

Ammonia in the gaseous form or in aqueous solution neutralises acids forming the respective ammonium salts because it is basic in nature.

4 0

2 years ago

Read 2 more answers

Which of the following is NOT a pure substance? Question 5 options: compounds table salt (NaCl) elements steel

seraphim [82]

Answer:

Steel

Explanation:

I took a test and got this question right

8 0

3 years ago

When solid ammonium carbamate sublimes, it dissociates completely into ammonia and carbon dioxide according to the following equ

Harlamova29_29 [7]

Answer: The equilibrium constant for the given equation is 0.0315

Explanation:

We are given:

Total pressure in the container = 0.596 atm

The given chemical equation follows:

$N_2H_6CO_2(s)\rightleftharpoons 2NH_3(g)+CO_2(g)$

Initial: -

At eqllm: - 2x x

Evaluating the value of 'x'

$\Rightarrow (x+2x)=0.596\\\\x=0.199$

The expression of $K_p$ for above equation follows:

$K_p=p_{CO_2}\times (p_{NH_3})^2$

The partial pressure of pure solids and pure liquids are taken as 1 in the equilibrium constant expression.

Putting values in above expression, we get:

$K_p=(0.199)\times (2\times 0.199)^2\\\\K_p=0.0315$

Hence, the equilibrium constant for the given equation is 0.0315

7 0

3 years ago