Select the correct statement(s). | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) In $CO_2$,the total number of electrons is $6 + 8 + 8 = 22$.In the cyanamide ion $(CN_2^{2-})$,the total number of electrons is $6 + 7 + 7 + 2 = 2

Vedclass · Accepted Answer

All of the above.

Vedclass · Answer

(D) In $CO_2$,the total number of electrons is $6 + 8 + 8 = 22$.In the cyanamide ion $(CN_2^{2-})$,the total number of electrons is $6 + 7 + 7 + 2 = 22$. Since both have $22$ electrons,they are isoelectronic. Both $CO_2$ and $(CN_2^{2-})$ exhibit a linear structure. Thus,statement $(a)$ is correct.$Mg_2C_3$ reacts with water to produce propyne: $Mg_2C_3 + 4H_2O 	o 2Mg(OH)_2 + CH_3C \equiv CH$. Thus,statement $(b)$ is correct.The crystal structure of $CaC_2$ is of the $NaCl$ type (distorted rock salt structure). Thus,statement $(c)$ is correct.Therefore,all the given statements are correct.

List-$I$ Elements	List-$II$ Colour imparted to the flame
$A. K$	$I. Violet$
$B. Ca$	$II. Brick Red$
$C. Sr$	$III. Crimson Red$
$D. Ba$	$IV. Apple Green$

Select the correct statement$(s)$.

Similar Questions

Match List-$I$ with List-$II$

List-$I$ Elements List-$II$ Colour imparted to the flame

$A. K$ $I. Violet$

$B. Ca$ $II. Brick Red$

$C. Sr$ $III. Crimson Red$

$D. Ba$ $IV. Apple Green$

Choose the correct answer from the options given below:

Which of the following compounds is useful as a fertilizer?

What is the nature of metal nitrates?

Which of the anhydrous salts,when it comes in contact with water,turns blue?

Match the following substances in List-$I$ with their uses in List-$II$:
| List-$I$ (Substance) | List-$II$ (Use) |
| :--- | :--- |
| $(A)$ $Na_2O_2$ | $(I)$ Photoelectric cells |
| $(B)$ $D_2O$ | $(II)$ Antacid |
| $(C)$ $Cs$ | $(III)$ Oxidising agent |
| $(D)$ $Mg(OH)_2$ | $(IV)$ Moderator |

Vedclass Test Series

Exam Paper Generator

Online Exam Module