Helium is in group 18 of the periodic table. How is helium different from the other elements in this group?(1 point) A _ Helium atoms have a full outer energy level, while atoms of the other elements in the group do not have a full outer energy level.

B _ Helium atoms have 2 electrons, while atoms of the other elements in the group all have 18 electrons.

C _ Helium atoms have 2 valence electrons, while atoms of the other elements in the group all have 8 valence electrons.

D _ Helium atoms have valence electrons in the first energy level, while atoms of the other elements in the group have valence electrons in the second energy level.

What is the volume of the fluid in the graduated cylinder with accuracy and measured to the correct degree of precision? 41.2 ml 42.0 ml 41.23 ml 41.89 ml

Why do you suppose the structural polysaccharide cellulose does not contain branches? why do you suppose the structural polysaccharide cellulose does not contain branches? branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into globules, thereby decreasing the flexibility and strength of the globules. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into microfibrils, thereby increasing the rigidity and strength of the microfibrils. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into globules, thereby increasing the flexibility and strength of the globules. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into microfibrils, thereby decreasing the rigidity and strength of the microfibrils.

What is the percentage of hydrogen in nitrogen trihydride