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Periodic Properties And Variations Of Properties: Physical And Chemical
Fill in the blanks from the choices given in brackets:
The energy required to remove an electron from a neutral isolated gaseous atom and convert it into a positively charged gaseous ion is called ____________. (electron affinity, ionization potential, electronegativity)
ionization potential
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i) Among the element given below, the element with the least electronegativity is:
a) Lithium
b) Carbon
c) Boron
d) Fluorine
The metals of group 2 from top to bottom are Be,Mg, Ca, Sr and Ba.
1) which one of these elements will form ions most readily and why?
2) state the common feature in the electronic configuration of all these elements.
Arrange the following as per the instructions given in the brackets:
I) Cs, Na, Li,K, Rb (increasing order of metallic character)
ii) Mg, Cl, Na, S, Si (decreasing order of atomic size)
Arrange the following as per the instructions given in the brackets:
iii) Na,K,Cl,Si(increasing order of ionization energy)
Arrange the following as per the instructions given in the brackets:
iv) Cl,F, Br, I(increasing the order of electron affinity).
Choose the most appropriate answer from the following list of oxides which fit the description. Each answer may be used only once:
[SO2,Al2O3,SiO2,MgO,CO,Na2O]
i) A basic oxide
ii) An oxide which dissolves in water forming an acid
iii) An amphoteric oxide
iv) A covalent oxide of a metalloid.
Choose the correct answer from the options given below:
Ionisation potential increases over a period from left to right because the:
If an element A belong to period 3 and group II then it will have:
Give one word or phrase for the following :
The amount of energy released when an atom in the gaseous state accepts an electron to form an anion.
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