Science Do As Directed.

Complete the analogy :
Valency of Na (2,8,1) : one : : Valency of P(2,8,5) : ………… .

Complete the analogy :
(Li, Na, K) : ………… :: (F, Cl, Br) : Group 17

Complete the analogy :
Fe : electropositive : : CI : ………… .

Complete the analogy :
Ca : alkaline earth metal : : Cs : ………… .

Complete the analogy :
Lanthanides : Ce to Lu : : Actinides : …………

Complete the analogy :
Transition elements: ………… : : Inner transition elements : Three incomplete outmost shells

Complete the analogy :
Tellurium : ………… : : Radium: Metal

Complete the analogy :
Transition elements : d-block : : Inner transition elements : ………… .

Complete the analogy :
Group 1 : Alkali metals : : ………… : Alkaline earth metals.

Complete the analogy :
Fluorine : 2, 7 : : Chlorine : ………… .

Complete the analogy :
Hydrogen : First period : : Lithium : ………… .

Complete the analogy :
Mendeleev's periodic table : Atomic mass : : Modern Periodic table : ………… .

Complete the analogy :
Dobereiner : Triad : : Newlands : ………… .

True or False : Upto Calcium, the law of octaves was found to be applicable.

True or False : The zig-zag line separates the metals from nonmetals in the periodic table i.e. metals are on the left side and nonmetals are on the right side.

True or False : There are 7 periods in the long form of the periodic table.

True or False : The d-block elements are called transition elements.

True or False : The d-block elements are called transition elements

True or False : The chemical properties of the elements in the same group show similarity.

True or False : Tellurium, Polonium are metalloids.

True or False : Silicon is a metalloid.

True or False : Periods are the horizontal rows of elements.

True or False : Newlands was the first to classify elements having similar chemical properties into groups of three.

True or False : Newlands stated the law of triads.

True or False : Metals are electronegative and non-metals are electropositive.

True or False : Mendeleev was the first who successfully classified all known elements.

True or False : Mendeleev’s periodic table is more useful because it gives information about known and unknown elements.

True or False : Mendeleev arranged elements in the increasing order of their atomic masses.

True or False : Lithium, Potassium and Sodium are elements forming Dobereiner's triad.

True or False : La stands for Lutetium.

True or False : Lanthanides and actinides are also called the d-block elements.

True or False : Isotopes have similar chemical properties.

True or False : Isotopes have same atomic masses.

True or False : In the modern periodic table, properties of the elements are a periodic function of their atomic numbers.

True or False : In a period, the metallic character increases from left to right.

True or False : In a period, atomic sizes increases from left to right.

True or False : In an atom of an element, extra-nuclear electrons take part in the chemical reaction.

True or False : In a group, the metallic character decreases from top to bottom.

True or False : Group 1 elements in Modern Periodic table are referred as "alkali metals".

True or False : Group 17 elements are known as Noble gases.

True or False : f-block elements are metalloids.

True or False : Elements are classified on the basis of their atomic numbers.

True or False : Eka boron is known as Germanium.

True or False : Eka-aluminium was later named as germanium.

True or False : Eka-aluminium was discovered and named as gallium (Ga).

True or False : Dobereiner stated the law of octet.

True or False : Dobereiner named the group of elements having similar properties as Triads.

True or False : Atomic number is the number of protons or electrons in the nucleus.

True or False : As we move from left to right in a period in Modern Periodic table, atomic size of the elements gradually increases.

True or False : Argon is not an inert gas.

True or False : All the elements of a group have the same number of valence electrons.

True or False : According to Mendeleev's periodic law, the properties of elements are a periodic function of their atomic numbers.

Find An Odd One Out : Sodium, Lithium, Copper, Beryllium

Find An Odd One Out : Lithium, Magnesium, Sodium, Potassium

Find An Odd One Out : Lithium, Beryllium, Boron, Chlorine

Find An Odd One Out : Helium, Radon, Argon, Boron

Find An Odd One Out : Dalton, Dobereiner, Mosely, Newlands

Find An Odd One Out : Chlorine, Bromine, Iodine, Oxygen

Find An Odd One Out : Chlorine, Bromine, Arsenic, Fluorine

Find An Odd One Out : Boron, Silicon, Potassium, Antimony

Find An Odd One Out : Boron, Silicon, Neon, Polonium

Find An Odd One Out : Aluminium, Argon, Xenon, Sodium

Name the Following : Two elements having a single electron in their outermost shell.

Name the Following : Three nonmetallic elements in period 2.

Name the Following : Three elements with filled outermost shell.

Name the Following : Three elements having 7 electrons in their outermost shell.

Name the Following : The three metals in the third period of the modern periodic table.

Name the Following : The noble gas with the smallest atomic radius.

Name the Following : The most reactive nonmetal.

Name the Following : The most electronegative atom.

Name the Following : The element with electronic configuration (2, 7).

Name the Following : The elements in periods 2 and 3 having stable electronic configuration.

Name the Following : The atom having the smallest size.

Name the Following : The atom having the smallest atomic mass.

Name the Following : Horizontal rows In modern periodic table.

Name the Following : Halogen in period 3.

Name the Following : An alkaline earth metal in period 3.

Name the Following : An alkali metal in period 2.

Complete the analogy :
Valency of Na (2,8,1) : one : : Valency of P(2,8,5) : ………… .

Complete the analogy :
Transition elements: ………… : : Inner transition elements : Three incomplete outmost shells

Complete the analogy :
Transition elements : d-block : : Inner transition elements : ………… .

Complete the analogy :
Tellurium : ………… : : Radium: Metal

Complete the analogy :
Mendeleev's periodic table : Atomic mass : : Modern Periodic table : ………… .

Complete the analogy :
(Li, Na, K) : ………… :: (F, Cl, Br) : Group 17

Complete the analogy :
Lanthanides : Ce to Lu : : Actinides : …………

Complete the analogy :
Hydrogen : First period : : Lithium : ………… .

Complete the analogy :
Group 1 : Alkali metals : : ………… : Alkaline earth metals.

Complete the analogy :
Fluorine : 2, 7 : : Chlorine : ………… .

Complete the analogy :
Fe : electropositive : : CI : ………… .

Complete the analogy :
Dobereiner : Triad : : Newlands : ………… .

Complete the analogy :
Ca : alkaline earth metal : : Cs : ………… .