3 years ago

An element X has the proton number 18.

Chemistry

1 answer:

storchak [24]3 years ago

8 0

Answer:

This question is incomplete

Explanation:

This question is incomplete. However, the element X with the atomic number of 18 is Argon (Ar) while the next element (element Y) in the periodic table, with atomic number 19, is potassium (K).

Element X is found in the group zero (also called group 18 and elements found therewith are referred to as noble gases) of the periodic table while element Y is found in group 1 (elements found here are referred to as alkali metals).

Element X has a completely filled outermost shell while element Y has one electron in its outermost shell.

Element X is a metal while element Y is a nonmetal.

You might be interested in

What Phase is water at 120 degrees Celsius?

Rina8888 [55]

At atmospheric pressure water boils at 100 degC.
So the water would be gas/vapor/steam.

4 0

3 years ago

A rigid tank contains 2.4 kg of helium at determine the volume

ddd [48]

The volume is 1.3 for

4 0

4 years ago

Who were the Native Americans ?

NikAS [45]

You want details about them?

4 0

3 years ago

Read 2 more answers

A mixture is made by combining 1.62 lb of salt and 5.20 lb of water.

WINSTONCH [101]

Answer:

23.8

Explanation:

Formula

weight % = weight of solute/ weight of solution x 100

weight of solution = weight of salt + weight of water

weight of solution = 1.62 lb + 5.20 lb = 6.82 lb

weight % = 1.62 / 6,82 x 100

weight % = 0.238 x 100

weight % = 23.8

4 0

3 years ago

What is the (OH-) in a solution with a pOH of 6.48

inn [45]

Through manipulation of equations, we are able to obtain the equation:

$-pOH= log [ OH^{-}]$

Then we can transform the equation into:

$[ OH^{-}]= 10^{-pOH}$

Then we are able to plug in the pOH and directly get [OH-]:

$[ OH^{-}] = 10^{-6.48}$

$[ OH^{-}]=3.31* 10^{-7} M$

3 0

3 years ago