how many elements were in the periods for the first two rows of mendeleevs table? eight ten twelve seven
how many elements were in the periods for the first two rows of mendeleevs table? eight ten twelve seven
Answer
Brief Explanations:
En la tabla periódica de Mendeleev, la primera fila (período 1) tiene 2 elementos y la segunda fila (período 2) tiene 8 elementos. Sumando 2 + 8 = 10 elementos en los dos primeros períodos.
Answer:
B. ten