true?

The reaction is exothermic.

When $0\mathrm{.}500$ mole sulfur is reacted, $148kJ$ of energy is released.

III. When $32\mathrm{.}0g$ of sulfur are burned, $2\mathrm{.}96{10}^{5}J$ of energy is released.

A$)$ All are true

B$)$ None is true.

C$)$ I and II are true.

$($D$)$ I and III are true.

E$)$ Only II is true.

Calculate $H^{**}$ for the reaction $C_4{H}_4(g)+2H_2(g)C_4{H}_8(g),$ using the following data:

$H$ combustion for $C_4{H}_4(g)=-2341k\frac{J}{m}ol$

$H$ combustion for $H_2(g)=-286k\frac{J}{m}ol$

$H$ combustion for $C_4{H}_8(g)=-2755k\frac{J}{m}ol$

A$)-128kJ$

B$)-158kJ$

C$)128kJ$

D$)158kJ$

E$)$ none of these

Of the following transitions in the Bohr hydrogen atom, the transition results in the emission of the highest$-$energy photon.

A$)N=6n=1$

B$)n=1n=6$

C$)n=3n=6$

D$)n=6n=3$

E$)n=1n=4$

There are possible values for the magnetic quantum number of an electron in a $5f$ subshell.

A$)7$

B$)3$

$14$

D$)5$

E$)1$

Which electron configuration represents a violation of the Pauli exclusion principle?

$)$

C$)$

D$)$

E$)$

$1s,\frac{2(s)}{\text{u}\text{a}\text{r}\text{r}}$

The electron configuration of a ground$-$state $Ag$ atom is

A$)[Kr]5s^{1}4d^{10}$

B$)[Kr]5s^{2}4d^{10}$

$($C$)[Ar]4s^{2}4d^9$

D$)[Kr]5s^{2}3d^9$

E$)[Ar]4s^{1}4d^{10}$

The ground state electron configuration of $Fe$ is

A$)1s^{2}2s^{2}3s^{2}3p^{6}3d^6$

B$)1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}4d^6$

C$)1s^{2}2s^{2}2p^{63}{s}^{2}3p^{64s^2}$

$($D$)1s^{2}2s^{2}2p^{6}3s^{2}3p^{63d}64s^2$

E$)1s^{2}2s^{2}3s^{2}3p^{10}$

Which one of the following configurations depicts an excited carbon atom?

A$)1s^{2}2s^{2}2p^3$

B$)1s^{2}2s^{2}2p^2$

$($C$)1s^{2}2s^{2}3s^1$

D$)1s^{2}2s^{2}2p^1$

E$)1s^{2}2s^{2}2p^{13}{s}^1$

The $4d$ subshell in the ground state of atomic xenon contains electrons.

A$)2$

B$)6$

C$)8$

D$)10$

E$)36$

Consider the following electron configuration to answer Q# $18-19$

$($i$)1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^1$

$($ii$)1s^{2}2s^{2}2p^{6}3s^{2}3p^5$

$($iii$)1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^8$

$($iv$)1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^6$

$($v$)1s^{2}2s^{2}2p^{4}3s1$

$18.$ An example of an electron configuration of a transition metal is

A$)($i$)$

B$)($ii$)$

C$)($iii$)$

D$)($iv$)$

E$)($v$)$