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What do atoms of elements in the same group of periodic table have in common?
The atoms of the elements in the same group have the same number of valence electrons. This means that they react with other elements in a similar way. For example group 1. All the atoms in group 1 react with water and oxygen, so they have to be kept in paraffin-oil. Another example is group 18. They don't react with anything. The atoms of the same row have the same electron shells.
Why do atoms with the same number of valence of electrons have similar chemical properties?
Because atoms with the same number of valence electrons react in similar ways with other elements.
When two atoms of the same nonmetal react they often form a.?
They often form a diatomic molecule.
When 2 atoms of the same nonmetal element react they form what?
You think probable to diatomic molecules but these are not formed by a reaction.
If there are two atoms of oxygen and four atoms of hydrogen before the reaction what will be true after the reaction?
After the reaction, if the two atoms of oxygen and four atoms of hydrogen react to form water (H2O), the resulting molecules will contain two oxygen atoms and four hydrogen atoms in the water molecule. So, the total number of atoms will remain the same, with two hydrogen molecules combining with one oxygen molecule to form two water molecules.
When sodium chloride and hydrochloric acid react then why sodium hydroxide do not formed?
The reaction is: NaOH + HCl = NaCl + H2O HCl and NaCl cannot react, the anion is the same.
According to the law of conservation of mass how many atoms of calcium can react to produce more calcium?
The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction, only rearranged. This means that the number of calcium atoms present before the reaction must be the same as the number of calcium atoms present after the reaction. Therefore, if a certain number of calcium atoms react to produce more calcium, the total number of calcium atoms will remain the same.
What is the total number of moles of nacl formed with 2 moles of na2cro4 react completely?
If 2 moles of Na2CrO4 react completely, they will form the same number of moles of NaCl. This is because the mole ratio between Na2CrO4 and NaCl is 1:2. Therefore, 2 moles of Na2CrO4 will form 2 moles of NaCl.
Does Na plus react with water the same way as neutral Na?
No. Salt (NaCl) dissolves in water and the (Na) in it does not react with the water as would metallic sodium.
Is the number of mole remain same if you add distilled water?
Yes, the number of moles will remain the same as long as the chemical does not react with water.
How many atoms of Na are in 49.3g of NaCl?
There is 1 atom of Na in 1 molecule of NaCl. The molar mass of NaCl is 58.44 g/mol, so in 49.3g there are 49.3/58.44 moles of NaCl. This equals the same number of moles of Na, which corresponds to 49.3/58.44 x 6.022 x 10^23 atoms of Na.
Is dissolving NaCl in h2o a chemical change?
Dissolving NaCl in water is a physical change, not a chemical change. The NaCl molecules remain the same chemically, but the arrangement of the particles changes as they interact with water molecules.
What do atoms of elements in the same group of periodic table have in common?
The atoms of the elements in the same group have the same number of valence electrons. This means that they react with other elements in a similar way. For example group 1. All the atoms in group 1 react with water and oxygen, so they have to be kept in paraffin-oil. Another example is group 18. They don't react with anything. The atoms of the same row have the same electron shells.
Is NaCl decreases when heated to 90 degree C?
No, NaCl (sodium chloride) does not decrease when heated to 90 degrees Celsius. Heating NaCl at this temperature will not cause it to decompose or decrease in quantity – it will remain the same compound, only in a different physical state (solid to liquid).
Why do atoms with the same number of valence of electrons have similar chemical properties?
Because atoms with the same number of valence electrons react in similar ways with other elements.
Why two samples of the same pure substance react the same way?
Because they are composed of the very same atoms. There is no difference between their composition, and hence there can be no difference in the way they react. Atoms of the same element have no personalities or individuality; they will always behave the same (given all other conditions are also equal).
Why do certain atoms react with other atoms?
since not all atoms have same no.of electronic configuration they try to attain an octet sharing electrons each other
