Question

Atomic numbers of a few elements are given as 10, 20.

a) Identify the elements.

b) Identify the group number of these elements in the Periodic Table.

c) Identify the Periods of these elements in the Periodic Table ​

Answer 1

(a) (i) At no. 10 $\longrightarrow$ Neon

(ii) At no. 20 $\longrightarrow$ Calcium

(b) (i) Group of Neon $\longrightarrow$ 18th Group

(ii) Calcium $\longrightarrow$ 2nd Group

(c) Period number

(i) Neon - 2nd Period

(ii) Calcium - 4th period

${\huge{\bold{\bold{━━━━━━━━━━━━━}}}}$

Answer 2

Explanation:

(a) (i) At no. 10 \longrightarrow⟶ Neon \begin{gathered}\\\\\end{gathered}

(ii) At no. 20 \longrightarrow⟶ Calcium \begin{gathered}\\\\\end{gathered}

(b) (i) Group of Neon \longrightarrow⟶ 18th Group \begin{gathered}\\\\\end{gathered}

(ii) Calcium \longrightarrow⟶ 2nd Group \begin{gathered}\\\\\end{gathered}

(c) Period number\begin{gathered}\\\\\end{gathered}

(i) Neon - 2nd Period\begin{gathered}\\\\\end{gathered}

(ii) Calcium - 4th period

{\huge{\bold{\bold{━━━━━━━━━━━━━}}}}━━━━━━━━━━━━