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LiRa [457]
3 years ago
9

What do elements in the same column of the periodic table have in common?

Chemistry
2 answers:
pishuonlain [190]3 years ago
5 0

Answer:

The elements in each group have the same number of electrons in the outer orbital. those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements.

Oxana [17]3 years ago
5 0

Answer:

They have similar chemical properties!

Explanation:

A column of periodic table is called a group. Elements in a group have similar properties. Like group 1 elements, Lithium and Sodium are extremely reactive. They both fall under same group which is group 1.

They also have same number of valence electrons this is one of the reasons why they have similar chemical properties.

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Please help me with this. (: I'd appreciate it.
Soloha48 [4]

Answer:

The answer to your question is:  ΔH = -283 kJ/mol, first option

Explanation:

Reaction

                CO  +  O₂     ⇒     CO₂

ΔH = ∑H products - ∑H products

ΔH = -393.5 - (-110.5 + 0)

ΔH = -393.5 + 110.5

ΔH = -283 kJ/mol

4 0
3 years ago
Zn-64 = 48.63%
Ann [662]

Answer:

A = 65.46 u

Explanation:

Given that,

The composition of zinc is as follows :

Zn-64 = 48.63%

Zn-66 = 27.90%

Zn-67 = 4.10%

Zn-68 = 18.75%

Zn-70 = .62%

We need to find the  average atomic mass of the given element. It can be solved as follows :

A=\dfrac{48.63\times 64+27.90\times 66+4.1\times 67+18.75\times 68+0.62\times 70}{100}\\A=65.46\ u

So, the average atomic mass of zinc is 65.46 u.

5 0
3 years ago
Calculate the number of atoms
ra1l [238]
D.....................
5 0
2 years ago
Help me I’m struggling with this one
sweet-ann [11.9K]

Answer:

Eukarya

Explanation:

It's larger than a prokaryotic cell and it has a nucleus.

3 0
3 years ago
PLEASE ANSWER BY 9:00pm PT
astra-53 [7]

Answer:

thanks to all the mortal those who are born must die one day that it cut in cannot be avoided as ripe fruit fall of the tree so it is common to all the mortal those who are born must die one day that it cut

Explanation:

silghjnb bj i bb b nv bv hc U and lamenting produce a few of the tree so much for your time is common to both of us ☺️ to all the said that death of the tree so it cut in cannot be avoided as well as well but the mortal Kombat X the said

7 0
3 years ago
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