Join the IDNLearn.com community and start exploring a world of knowledge today. Explore a wide array of topics and find reliable answers from our experienced community members.

Write the symbol for every chemical element that has atomic number greater than 70 and atomic mass less than 181.2 u.

Sagot :

Answer:

Lu

Hf

Ta

Explanation:

Lu- Lutecium
Atomic Number- 71
Atomic Mass-174.967

Hf- Hafnium
Atomic Number-72
Atomic Mass178.492

Ta- Tantalum
Atomic Number-73
Atomic Mass-180.948