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Elanso [62]
4 years ago
12

What best explains the observed trend in atomic radii going down the periodic table

Chemistry
1 answer:
Serggg [28]4 years ago
5 0

going down the the periodic table, the number of shells increases resulting in an obvious increase in the atomic radii of the elements

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Draw all the structural isomers for the molecular formula c4h9br. Be careful not to draw any structures by crossing one line ove
Rufina [12.5K]

There are four structural isomers with the molecular formula C₄H₉Br.

You start by writhing the linear carbon chain and the you start moving the bromide atom until you find all the compounds. In our case you have bromide atom in the position 1 and 2 on the carbon chain.

Then you branch the carbon chain and you have isobutane. Here the possible positions for bromide is 1 and 2 on the primary carbon chain.

5 0
3 years ago
Write a short note on importance of air​
KiRa [710]
Air is important, well it is used for breathing and refreshing and air forms atmosphere. With out air there is no life :)
8 0
3 years ago
Suggest a procedure for separating iron shavings from sawdust. Explain why this procedure would work.
Mrac [35]

Answer:

Magnetic separation

Sawdust is a non-magnetic material whereas iron shavings are magnetic. When a magnet is brought near a mixture of iron shavings and sawdust, the iron shavings will be attracted to the magnet while the sawdust will not. Thus, the iron shavings will be separated from the sawdust.

Explanation:

Separation techniques makes use of the differences in the properties of components of mixtures to separate theses components, one from another.

In a moxturemof iron shavings and sawdust, a suitable separation technique would be the use of magnetic separation.

The use of this separation technique is abasednonnthe principle that when a magnetnis brought near to a mixture containing magnetic and non-magnetic materials, the magnetic materials will be separated from the non-magnetic materials due to their attraction to the magnet. Sawdust is a non-magnetic material whereas iron shavings are magnetic. When a magnet is brought near a mixture of iron shavings and sawdust, the iron shavings will be attracted to the magnet while the sawdust will not. Thus, the iron shavings will be separated from the sawdust.

5 0
3 years ago
How does an atom of one element differ from the atom of another element?
Temka [501]

Explanation:

The atoms of one element differs from the atoms of other elements in terms of the number of protons they contain. This is often taken as the atomic number of such an atom.

  • The number of proton is the best indicator of the atom one is dealing with.
  • Based on this number, elements are categorized into distinct columns and rows on the periodic table.
  • The atomic number is the number of protons or positively charge particles in the atom.

II.

It is possible to change the identity of an atom. This is only possible by altering the atomic number of the atom.

Only nuclear reactions have this capability.

When an atom undergoes nuclear reaction that involves change in number of protons, transmutation occurs and a new atom forms.

8 0
3 years ago
if you were to compare the mass of the products and reactants in a reaction, you would find that the mass of the products is alw
Yakvenalex [24]
If you were to compare the mass of the products and reactants in a reaction, you would find that the mass of the products <span>is equal to the mass of the reactants.</span>
5 0
3 years ago
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