a) What is meant by periodicity in properties of elements with reference to the periodic table? (b) Why do all the elements of the same group have similar properties? (c) How will the tendency to gain electrons change as we go from left to right across a period? Why? -Science

a) What is meant by periodicity in properties of elements with reference to the periodic table? (b) Why do all the elements of the same group have similar properties? (c) How will the tendency to gain electrons change as we go from left to right across a period? Why? -Science
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Answer :

(a) The repetition of same properties after definite interval is called periodicity in properties. (b) It is because they have same valence electrons therefore, have similar properties. (c) Tendency to gain electrons increases from left to right in a period because atomic size goes on decreasing and effective nuclear charge increases.
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What groups of elements should have very different chemical properties in the periodic table?

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Why the elements belonging to the same group do have similar chemical properties ?

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The cause of periodicity is the recurrence of similar

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Which one of the following elements exhibits the greatest tendency to lose electrons ? (1) Fluorine (2) Lithium (3) Oxygen (4) Zinc

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List the elements of 15 th group of the periodic table. Name the distinct metals and non-metals of the group.

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Last Answer : The number of elements in the zero group of the periodic table is 6 .

In which group of elements of the modern periodic table are halogen placed ?

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What structural feature of their atoms is characteristic of elements in a group of the periodic table?

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Name the elements present in the 2nd Group of the Periodic Table:

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Which group elements show very low ionization enthalpy in the periodic table?

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Last Answer : beryllium, magnesium, calcium, strontium, barium and radium. These elements with the exception of beryllium are commonly known as the alkaline earth metals. 

Name the elements present in the 1st Group of the Periodic Table

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Last Answer :  lithium, sodium, potassium, rubidium, caesium and francium. They are collectively known as the alkali metals. 

Name this chemical element. The principal use of this element has been in solid-state electronic devices, notably transistors. Its position in the periodic table is in group "4A". The element's atomic number is 32 and its chemical symbol is Ge.

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Last Answer : ANSWER: GERMANIUM

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Last Answer : A. Period (Answer)

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