Find the odd man out sodium aluminium chlorine carbon
In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. More reactive metals have a greater tendency to lose electrons and form positive ions. A reactivity series of metals could include any elements. For example:. A good way to remember the order of a reactivity series of metals is to use the first letter of each one to make up a silly sentence. Observations of the way that these elements react with water, acids and steam enable us to put them into this series.SEE VIDEO BY TOPIC: Periodic Table Atomic Mass - Trick To Learn Atomic Mass Number
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Post a Comment. Wednesday, 19 August School of Elements. AHER J. They form alkali on reaction with water and their oxides are found in earth. So, they are called. The elements of this group form salts and are. Fill in the blanks :. The horizontal rows in the periodic table are periods. From left to right, the atomic size of an atom Decreases.
There are 7 periods in the periodic table. An element is placed in group II A, so the number of valence electrons is 2. An element is placed in 2 nd period, so it has 2 shells. Noble gases have valency as 0.
Metals have a tendency to donate electrons. Valency across a period varies gradually. Valency down the group ramains the same. An atom is said to be a non-metal if it gains or shares electrons.
Helium is the only element in duplet state. The electronic configuration of Neon is 2, 8. The element eka-Aluminium is called as gallium. Silicon and antimony are metalloids. Group 1A is called alkali metals. Group II A is called as alkaline earth metals.
Group VII A is called as halogens. The chemical properties down the group remain the same. First period contains 2 elements. Moseley arranged elements according to Atomic number. The non-metals are present in upper right hand corner. The number of shells down the group increases. The transition character of elements is from metallic to Non-metallic. Elements showing properties of both metals and non-metals are called as metalloids.
Sodium is a metal. State true or false. If false write the corrected statement :. Atomic number is the number of protons or electrons in the nucleus. Fourth and fifth periods are longest periods.
Fourth and fifth periods are long periods, 6th period is the longest period. Newlands arranged elements based on their atomic number. Newlands arranged elements based on their atomic mass. Mendeleev was the first scientist to create a periodic table for the elements.
Mendeleev arranged 63 elements in the periodic table. Eka boron is known as Germanium. Eka boron is known as Scandium. Tellurium, Polonium are metalloids. Isotopes have same atomic masses. Isotopes having same atomic number but different atomic masses.
Isotopes have similar chemical properties. La stands for Lutetium. La stands for Lanthanum. Metalloids are also called as semi-metals. Bordering the zig-zag line are elements called as metalloids. In an atom of an element, extra-nuclear electrons take part in the chemical reaction. The number of shells increases down the group. Helium is the only element in octet state. Find the odd man out :. Carbon, Nitrogen, Oxygen, Sulphur. It is in third period while the rest are in second period.
Hydrogen, Helium, Neon, Argon. The rest are noble gases. Lithium, Sodium, Iodine, Potassium. Iodine as a halogen and rest belong to group 1A. Boron, Silicon, Arsenic, Sodium. Sodium belongs to group IA and rest are metalloids. Li, Sr, K, Na. Sr is an element of a different triad whereas Li, Na, K are elements of same triad.
N and S. It does not show similarities in properties according to Newlands law of octaves whereas the others show similarities. Electrons, protons, neutrons, lanthanides. It is a series and rest all make up an atom. Write the correlated terms :. Newlands : Octaves Triad I. Li, Na, K. Fluorine Second period. Neon : Inert element :: Bromine Fifth period : 18 elements :: Sixth period Alkali metals : Monovalent :: Alkaline earth metal Tellurium Give two names of the following :.
Member of 1st period : - Hydrogen, Helium. Member of 2nd period : - Carbon, Nitrogen. Alkali metals : - Lithium, Sodium. Alkaline earth metals : - Magnesium, Calcium. Member of 3rd period : - Phosphorus, Sulphur. Elements of zero group : - Neon, Argon. Elements of halogen family : - Fluorine, Chlorine. Metalloid : - Silicon, Antimony. State the following :. The atomic weights are 6. Newlands law of octaves.
The physical and chemical properties of elements are periodic function of their atomic masses. Modern periodic law. The physical and chemical properties of elements are periodic function of their atomic numbers.
Define the following :. Vertical column of elements in a periodic table are called as a groups. Horizontal row of elements in a periodic table are called as a periods.
Inert gas elements. Normal elements.
ICSE BOARD PAPER - 2009 - X - Chemistry 2009 Set 1
Based on their position in the peeriodic table, which atom would you predict to form a compound with one chlorine atom and 2 bromine atoms respectively? You have 0 free answers left. Get unlimited access to 3,, step-by-step solutions.
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Sodium, aluminium, chlorine ,carbon. Find odd man out and give reason
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ICSE Chemistry Question Paper 2009 Solved for Class 10
To Access the full content, Please Purchase. E Graphite. Write only letter corresponding to the correct answer. A They are all saturated hydrocarbons. B They can undergo addition as well as substitution reaction.
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Odd one out: Elements edition Quiz Stats
The boron group are the chemical elements in group 13 of the periodic table , comprising boron B , aluminium Al , gallium Ga , indium In , thallium Tl , and perhaps also the chemically uncharacterized nihonium Nh. The elements in the boron group are characterized by having three valence electrons. Boron is classified as a typical non-metal while the rest, with the possible exception of nihonium, are considered post-transition metals. Boron occurs sparsely, probably because bombardment by the subatomic particles produced from natural radioactivity disrupts its nuclei.SEE VIDEO BY TOPIC: Super Common Mistake: Diatomic Elements
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Sodium, aluminium, chlorine ,carbon. find odd man out and give reason
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