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Sholpan [36]
3 years ago
13

What is a common feature of elements in group 1, group 2 and group 3?​

Chemistry
2 answers:
Papessa [141]3 years ago
8 0

Answer:

all of them have seven valence electron

Jobisdone [24]3 years ago
8 0
Group 1 has 1 valence electron

Group 2 has 2 valence electrons

Group 3 has 3 valence electrons

Thus, they all give electrons instead of taking like a noble gas does when satisfying the octet rule.

All of these groups have positive charges (i.e., +1, +2, +3).
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Write any two reasons that hydrogen is kept in group 1 ​
rodikova [14]

Answer:

《HOPE IT WILL HELP YOU 》

Explanation:

(1) It resembal Alkali metel in some of properties

(2) it alos resemble as the Helogens in its properties

6 0
3 years ago
Lab report for physical and chemical changes??!
slega [8]

Answer:

[See Below]

Explanation:

✦ Physical Changes:

  ✧ Is when the form changes, but not the chemicals in that form.

  ✧ An example of this would be chopping wood. It's still wood but it's a different size now. It's easier to burn it since it's smaller.

✦ Chemical Changes:

  ✧ Is when the chemicals inside that form change to something else entirely

  ✧ An example would be an egg, when you cook the egg it can turn into being scrambled or fried. But you can't eat the raw egg until the chemicals change.

~<em>Hope this helps Mate. If you need anything feel free to message me.</em>

7 0
3 years ago
Balance the following equation. Then, given the moles of reactant or product below, determine the corresponding amount in moles
Mrrafil [7]

Answer:

Option a → 4 mol NH₃

Explanation:

This the unbalanced reaction

NH₃  +  O₂  ⟶  N₂  +  H₂O

The balanced reaction:

4NH₃  +  3O₂  →  2N₂  +  6H₂O

4 mol of ammonia

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6 0
3 years ago
In a balanced chemical reaction, the number of atoms of each element in the product(s) always equals the
dangina [55]
A ? Or c I thinkkkkkk
6 0
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How would planting a variety of plants in a vacant (empty) lot help establish an ecosystem in that location?
vichka [17]

the plants would grow  and reproduce working together forming nutrients from their dropped  leaves / branches etc causing insects to come along and do the same  along with animals and a keystone species to form a revolving ecosystem continuing an energy moving process

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