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प्रश्न
Which one of the following elements exhibit maximum number of valence electrons?
विकल्प
Na
Al
Si
P
उत्तर
P
Explanation -
Out of the given options, phosphorus has an atomic number of 15, that means it has 15 electrons and thus it has the highest number of electrons.
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संबंधित प्रश्न
Fill in the blank:
The modern periodic table consists of ……………. periods.
Compare and contrast the arrangement of elements in Mendeleev’s periodic Table and the Modern Periodic Table.
Consider the following elements:
Ca, Cl, Na, I, Li, Ba, Sr, K, Br
Separate these elements into three groups (families) of similar properties. State one property in each case on the basis of which you have made your choice.
Which of the following are the correct characteristics of isotopes of an element?
(i) same atomic mass
(ii) same atomic number
(iii) same physical properties
(iv) same chemical properties
(a) (i), (ii) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
Name the noble gas with 3 shells.
The modern periodic table is divided into which blocks?
Distinguish between:
s-block - p-block
Explain structure of modern periodic table in short.
State any five features of modern periodic table.
The longest period of the Modern Periodic Table is period.
