Class 10SciencePeriodic Classification of ElementsMix Examples - Periodic Classification of Elements
EasyWrite true or false for the statement: Electronic configuration of hydrogen resembles that of alkaline earth metals.
(FALSE) The statement is False.
Hydrogen has an electronic configuration of $1s^1$,which means it has one valence electron in its outermost shell.
Alkaline earth metals (Group $2$ elements) have a general valence shell electronic configuration of $ns^2$,meaning they have two valence electrons.
Hydrogen's configuration actually resembles that of alkali metals (Group $1$),which have a general valence shell configuration of $ns^1$.
Hydrogen has an electronic configuration of $1s^1$,which means it has one valence electron in its outermost shell.
Alkaline earth metals (Group $2$ elements) have a general valence shell electronic configuration of $ns^2$,meaning they have two valence electrons.
Hydrogen's configuration actually resembles that of alkali metals (Group $1$),which have a general valence shell configuration of $ns^1$.
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Similar Questions
Name the following:
$(a)$ $A$ metal that can be cut with a knife.
$(b)$ $A$ metal that is liquid at room temperature.
$(c)$ $A$ metal that has $3$ valence electrons.
$(a)$ $A$ metal that can be cut with a knife.
$(b)$ $A$ metal that is liquid at room temperature.
$(c)$ $A$ metal that has $3$ valence electrons.
Medium
View SolutionThe element with atomic number $14$ is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?
Easy
View SolutionGive reasons for the following:
$(a)$ Lithium atom is smaller than Sodium atom.
$(b)$ Chlorine (Atomic Number $17$) is more electronegative than Sulphur (Atomic Number $16$).
$(a)$ Lithium atom is smaller than Sodium atom.
$(b)$ Chlorine (Atomic Number $17$) is more electronegative than Sulphur (Atomic Number $16$).
Medium
View SolutionThe position of some elements $A, B, C, D, E, F$ and $G$ in the Modern Periodic Table is given as under:
Group $\to$ $16$ $17$ $18$ Period $1$ $A$ Period $2$ $B$ $C$ $D$ Period $3$ $E$ $F$ $G$
$(a)$ In which group are inert elements placed?
$(b)$ What type of ions would $B, C, E,$ and $F$ form?
$(c)$ Which element would have chemical properties similar to $C$?
$(d)$ How many shells would $A$ have?
$(e)$ What is the similarity between $A$ and $D$?
$(f)$ Identify the most abundant element in the earth's crust.
| Group $\to$ | $16$ | $17$ | $18$ |
| Period $1$ | $A$ | ||
| Period $2$ | $B$ | $C$ | $D$ |
| Period $3$ | $E$ | $F$ | $G$ |
$(a)$ In which group are inert elements placed?
$(b)$ What type of ions would $B, C, E,$ and $F$ form?
$(c)$ Which element would have chemical properties similar to $C$?
$(d)$ How many shells would $A$ have?
$(e)$ What is the similarity between $A$ and $D$?
$(f)$ Identify the most abundant element in the earth's crust.
Medium
View SolutionAn element $X$ (atomic number $17$) reacts with an element $Y$ (atomic number $20$) to form a divalent halide.
$(a)$ Where in the periodic table are elements $X$ and $Y$ placed?
$(b)$ Classify $X$ and $Y$ as metal$(s)$,non-metal$(s)$,or metalloid$(s)$.
$(a)$ Where in the periodic table are elements $X$ and $Y$ placed?
$(b)$ Classify $X$ and $Y$ as metal$(s)$,non-metal$(s)$,or metalloid$(s)$.
Medium
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