Q. 4.9 - An Introduction to General, Organic, and Biological Chemistry

Question

Give the symbol of the element described by each of the following:
a. Group $4A\left(14\right)$  ,Period $2$
b. the noble gas in Period $1$
c. the alkali metal in Period $3$
d. Group $2A\left(2\right)$  , Period $4$
e. Group $13$ , Period $3$

Step-by-Step Solution

Answer

(a) The element is $C$; Carbon.

(b)The noble gas in period $1$ is $He$; Helium.

(c)Alkali metal in period $3$ is $Na$; Sodium.

(d)The element is $Ca$; Calcium.

(e)The element is $Al$; Aluminum.

Part(a) Step1 : Given information.

We have been given that ,

group$=14$ ,period$=2$

We need to find the element.

Part(a) Step2: Simplify.

The element with given group and period number is $C$; Carbon.

Part(b) Step1 : Given information.

We have been given that ,

Period $1$ noble gas.

We need to find the noble gas in period $1$.

Part(b) Step2 : Simplify.

The noble gas in period $1$ is $He$; Helium.

Part(c) Step1 : Given information.

We have been given that ,

Period $=3$

We need to find the alkali metal in period 3

Part(c) Step2 : Simplify.

The alkali metal in period 3 is $Na$; Sodium.

Essential for nerve impulses and water balance.

Part(d) Step1 : Given information.

We have been given that ,

Group$=2$, Period$=4$

We need to find the element.

Part(d) Step2: Simplify.

The element with given group and period number is $Ca$; Cacium.

Essential for bones, teeth.

Part(e) Step1 : Given information.

We have been given that ,

Group$=13$, Period $=3$

We need to find the element.

Part(e) Step2 : Simplify.

The element with given group and period number is $Al$; Aluminum.