What is periodic property?
The basic law that governs the modern periodic table is that elements’ properties are periodic functions of theiratomic numbers. These properties are reappear at regular intervals, or they follow a specific trend at regular intervals. This phenomenon is called the periodicity or elements.
What is periodic properties Class 11?
Mendeleev’s Periodic Law: The chemical and physical properties of elements are periodic. Their atomic masses. Mendeleev organized the elements at the time in an order that increased their atomic masses. This arrangement was known as the periodic table.
How many periodic properties are there?
Of all the 118 known elements, 11 are gaseous, 3 are liquid, and the remainder are solids under ordinary conditions. Except for hydrogen and mercury, all the liquid and gaseous elements are found in the right-hand portion of the periodic table. This is the area associated with nonmetallic elements.
How do you relate the periodic property to Mendeleev’s work?
Mendeleev realised that elements’ chemical and physical properties were End. to theiratomic mass in a periodic’ manner, and organized them so that elements with similar properties were placed in vertical columns.
What is the position of hydrogen in periodic table?
Hydrogen, a nonmetal, is placed above group in periodic table due to its ns1 electron configuration similar to the alkali metallics.
What is the dual nature of hydrogen?
Answer. Hydrogen has a dual nature, as it only has one electron in its K shell (i.e. the outermost), so it can take electrons (like halogens), or lend electrons (1 like alkali metals). This is why it displays the propriet.
What are sources of hydrogen?
Currently, hydrogen is primarily produced from fossil fuels like natural gas. Hydrogen can also be produced from electricity, whether it comes from the grid or renewable sources like wind, solar and geothermal. Longer term, biomass and solar energy can be used to produce hydrogen more directly.
Why is hydrogen gas called inflammable air?
Hydrogen has been named so because it’s a combustible fuel. This means it won’t allow any other substances to burn in the gas, but it will ignite itself. Because hydrogen is a combustible substance, it won’t allow any other substances to burn in it. It will simply burn itself.
Which metal is preferred for preparation of hydrogen from water?
What metal oxides can be reduced by hydrogen?
So, according to the options, only CuO can reacted with hydrogen.
Which test should be made before collecting hydrogen in a gas jar?
Hydrogen must burn with a loud pop sound to be considered a chemical. Before you collect the gas, you should test it with a burning stick. If the stick produces a popping sound, you will know that you have hydrogen gas.
How would you modify your apparatus to collect dry hydrogen?
Hydrophogen gas is nearly insoluble in water. It can be captured by water displacement using an inverted glass bottle. The hydrogen collected will be saturated by water vapor and contaminated by a small amount of oxygen. To remove water as a drying agent, the gas can be forced through calcium chloride pellets.
Which metal is preferred for collecting hydrogen from steam?
How are impurities removed from hydrogen?
Cl. C011) 1/33; F25j 3/08 ABSTRACT OF THE DISCLOSURE Crude hydrogen gas containing carbon dioxide and hydrogen sulfide impurities is scrubbed with aqueous liquid triethanolamine solution to remove the impurities from the hydrogen gas.
How do we get hydrogen gas?
Hydrogen can be made from methane, or electrolysis of water. As of 2020, the majority of hydrogen (~95%) is produced from fossil fuels by steam reforming or partial oxidation of methane and coal gasification with only a small quantity by other routes such as biomass gasification or electrolysis of water.