Choose the correct answer using the periodic table for the element Ba: Is it a metal, metalloid, or nonmetal?

Choose the correct answer using the periodic table for the element Ba: Is it a metal, metalloid, or nonmetal?

• metalloid

• metal

• nonmetal

Choose the correct answer using the periodic table for the element Ba: Which element has similar chemical properties to Ba?

• Rn

• Ra

Choose the correct answer using the periodic table for the element Ba:

• barium

• beryllium

• boron

• bromine

Select the best answer. What does D on this atom model indicate?

• electron

• proton

• neutron

• electron cloud

Choose the correct answer using the periodic table for the element Ba: How many protons does it have?

• 5

• 56

• 137

• 81

Choose the correct answer using the periodic table for the element Ba: What is its atomic number?

• 137

• 10.8

• 5

• 56

Choose the correct answer using the periodic table for the element Ba: Is this a transition metal, representative group, or inner transition metal?

• transition metal

• inner transition metal

• representative group

What makes atoms more stable?

• having 8 valence electrons

• having 10 valence electrons

• forming bonds with noble gases

• having high chemical reactivity with water

Select the best answer. What does E on this atom model indicate?

• nucleus

• electron cloud

• proton

• electron

Select the best answer. How many valence electrons does Si have?

• 4

• 2

• 3

• 1