(a) Neon has two shells, both of which are completely filled with electrons (2 electrons in K shell and 8 electrons in L shell). (b) Magnesium has the electronic configuration 2, 8, 2. (c) Silicon has a total of three shells, with four electrons in its valence shell (2 electrons in K shell, 8 electrRead more
(a) Neon has two shells, both of which are completely filled with electrons (2 electrons in
K shell and 8 electrons in L shell).
(b) Magnesium has the electronic configuration 2, 8, 2.
(c) Silicon has a total of three shells, with four electrons in its valence shell (2 electrons
in K shell, 8 electrons in L shell and 4 electrons in M shell).
(d) Boron has a total of two shells, with three electrons in its valence shell (2 electrons in
K shell and 3 electrons in L shell).
(e) Carbon has twice as many electrons in its second shell as in its first shell (2 electrons
in K shell and 4 electrons in L shell).
(a) X would most likely be in the same group of the Periodic Table as magnesium (Mg). For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-5/
(a) X would most likely be in the same group of the Periodic Table as magnesium (Mg).
(c) The atoms lose their electrons more easily. (On moving from left to right across the periods of the periodic table, the non-metallic character increases. Hence, the tendency to lose electrons decreases.) For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/scRead more
(c) The atoms lose their electrons more easily.
(On moving from left to right across the periods of the periodic table, the non-metallic
character increases. Hence, the tendency to lose electrons decreases.)
A soap molecule has two parts namely hydrophobic and hydrophilic. With the help of these, it attaches to the grease or dirt particle and forms a cluster called micelle. These micelles remain suspended as a colloid. To remove these micelles (entrapping the dirt), it is necessary to agitate clothes. FRead more
A soap molecule has two parts namely hydrophobic and hydrophilic. With the help of these,
it attaches to the grease or dirt particle and forms a cluster called micelle. These micelles
remain suspended as a colloid. To remove these micelles (entrapping the dirt), it is
necessary to agitate clothes.
Detergents are ammonium or sulphonate salts of long chain carboxylic acids. Unlike soap, they do not react with calcium and magnesium ions present in hard water to form scum. They give a good amount of lather irrespective of whether the water is hard or soft. This means that detergents can be used iRead more
Detergents are ammonium or sulphonate salts of long chain carboxylic acids. Unlike soap,
they do not react with calcium and magnesium ions present in hard water to form scum.
They give a good amount of lather irrespective of whether the water is hard or soft. This
means that detergents can be used in both soft and hard water. Therefore, it cannot be
used to check whether the water is hard or not.
Which element has
(a) Neon has two shells, both of which are completely filled with electrons (2 electrons in K shell and 8 electrons in L shell). (b) Magnesium has the electronic configuration 2, 8, 2. (c) Silicon has a total of three shells, with four electrons in its valence shell (2 electrons in K shell, 8 electrRead more
(a) Neon has two shells, both of which are completely filled with electrons (2 electrons in
K shell and 8 electrons in L shell).
(b) Magnesium has the electronic configuration 2, 8, 2.
(c) Silicon has a total of three shells, with four electrons in its valence shell (2 electrons
in K shell, 8 electrons in L shell and 4 electrons in M shell).
(d) Boron has a total of two shells, with three electrons in its valence shell (2 electrons in
K shell and 3 electrons in L shell).
(e) Carbon has twice as many electrons in its second shell as in its first shell (2 electrons
in K shell and 4 electrons in L shell).
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-5/
Element X forms a chloride with the formula XCl2, which is a solid with a high melting point. X would most likely be in the same group of the Periodic Table as
(a) X would most likely be in the same group of the Periodic Table as magnesium (Mg). For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-5/
(a) X would most likely be in the same group of the Periodic Table as magnesium (Mg).
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-5/
Which of the following statements is not a correct statement about the trends when going from left to right across the periods of periodic Table.
(c) The atoms lose their electrons more easily. (On moving from left to right across the periods of the periodic table, the non-metallic character increases. Hence, the tendency to lose electrons decreases.) For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/scRead more
(c) The atoms lose their electrons more easily.
(On moving from left to right across the periods of the periodic table, the non-metallic
character increases. Hence, the tendency to lose electrons decreases.)
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-5/
People use a variety of methods to wash clothes. Usually after adding the soap, they beat the clothes on a stone, or beat it with a paddle, scrub with a brush or the mixture is agitated in a washing machine. Why is agitation necessary to get clean clothes?
A soap molecule has two parts namely hydrophobic and hydrophilic. With the help of these, it attaches to the grease or dirt particle and forms a cluster called micelle. These micelles remain suspended as a colloid. To remove these micelles (entrapping the dirt), it is necessary to agitate clothes. FRead more
A soap molecule has two parts namely hydrophobic and hydrophilic. With the help of these,
it attaches to the grease or dirt particle and forms a cluster called micelle. These micelles
remain suspended as a colloid. To remove these micelles (entrapping the dirt), it is
necessary to agitate clothes.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-4/
Would you be able to check if water is hard by using a detergent?
Detergents are ammonium or sulphonate salts of long chain carboxylic acids. Unlike soap, they do not react with calcium and magnesium ions present in hard water to form scum. They give a good amount of lather irrespective of whether the water is hard or soft. This means that detergents can be used iRead more
Detergents are ammonium or sulphonate salts of long chain carboxylic acids. Unlike soap,
they do not react with calcium and magnesium ions present in hard water to form scum.
They give a good amount of lather irrespective of whether the water is hard or soft. This
means that detergents can be used in both soft and hard water. Therefore, it cannot be
used to check whether the water is hard or not.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-4/