Ask question

Ask question

All categories

aleksklad [387]

2 years ago

6

What were elements characterized by in the 1860's

1 answer:

ahrayia [7]2 years ago

4 0

Answer:

Döbereiner singled out triads of the elements lithium, sodium and potassium as well as chlorine, bromine and iodine. He noticed that if the three members of a triad were ordered according to their atomic weights, the properties of the middle element fell in between those of the first and third elements.

Explanation:

You might be interested in

Where are the rare earth metals located on the periodic table

maksim [4K]

They are found in group 3 of the periodic table.

7 0

3 years ago

Changing a solid to a liquid to a gas is changing the<br> matter.<br> *<br> Your answer

sukhopar [10]

Answer:

i could help you can you explain more plzzzzzz i really need points

Explanation:

6 0

2 years ago

Read 2 more answers

11.<br> The electron configuration for phosphorous is [Ar]3s23p4.<br> TRUE<br> FALSE

user100 [1]

Answer:

False

Explanation:

Phosphorus is number 15 on the periodic table, so its electronic configuration is:

${1s}^{2} {2s}^{2} {2p}^{6} {3s}^{2} {3p}^{3}$

5 0

2 years ago

What would the total mass of a 4.9 mole sample of Barium (Ba) be if its Molar Mass is 137g?

Aleksandr-060686 [28]

Answer:

m = 671 grams

Explanation:

Given that,

No of moles, n = 4.9

Molar mass of Barium, M = 137 g

Mass divided by molar mass is equal to no of moles. It can be given by the formula as follows :

$n=\dfrac{m}{M}\\\\m=n\times M\\\\m=4.9\times 137\\\\m=671.3\ g$

or

m = 671 grams

So, the total mass of the sample of Barium is 671 grams.

8 0

2 years ago

Which group on the Periodic Table reacts violently with water by igniting hydrogen gas?

Artemon [7]

Answer:

the answer would be Halogens

4 0

2 years ago