17. La disposición de Mendeléiev colocaba los
?
a)elementos con propiedades similares en columnas verticales o grupos.

b)elementos con propiedades similares en columnas horizontales.

c)elementos con propiedades similares en filas horizontales o periodos.

d)elementos con propiedades similares en filas verticales.

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.