Bohr Model Review

What is the name of this element?

• Lithium

• Boron

• Carbon

• Neon

Answer explanation

The correct answer is Neon, which is a noble gas and is known for its lack of reactivity. It is distinct from Lithium, Boron, and Carbon, which are all more reactive elements.

Tags

NGSS.MS-PS1-1

The innermost energy level has a maximum of how many electrons?

• 1

• 2

• 6

• 8

Answer explanation

The innermost energy level, also known as the first shell, can hold a maximum of 2 electrons. This is due to the formula 2n², where n is the energy level number. For n=1, 2(1)² = 2.

Tags

NGSS.MS-PS1-1

Which Bohr model represents Neon?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

The element above is found in what group?

Answer explanation

The question asks for the group of an element, and the correct answer is '2', which is the numerical representation of the group. The other options ('two', 'too', 'to') are not relevant to the question.

Tags

NGSS.MS-PS1-1

112.27.b.6.B

How many protons in the Calcium atom?

• 20

• 18

• 16

• 22

Answer explanation

A Calcium atom has an atomic number of 20, which means it has 20 protons. This is the defining characteristic of the element Calcium, making 20 the correct answer.

Tags

NGSS.MS-PS1-1

What is the maximum number of electrons in the 2nd orbit?

• 2

• 8

• 18

• 31

Answer explanation

The maximum number of electrons in an orbit is given by the formula 2n², where n is the orbit number. For the 2nd orbit (n=2), it is 2(2)² = 8. Therefore, the correct answer is 8.

How many energy levels or shells are in this element?

• 2

• 5

• 6

• 3

Answer explanation

The element has 3 energy levels or shells, which corresponds to its position in the periodic table. Each shell can hold a certain number of electrons, and for this element, 3 is the correct count.

On the periodic table, Periods are

• Horizontal rows

• Vertical columns

Answer explanation

On the periodic table, periods refer to horizontal rows of elements. Each period represents a different energy level of electrons, distinguishing them from groups, which are the vertical columns.

On the periodic table, Groups are

• Horizontal rows

• Vertical columns

Answer explanation

On the periodic table, Groups refer to vertical columns. Elements in the same group share similar chemical properties, while horizontal rows are called periods.

Which two particles should be fond in the center (nucleus) of a Bohr's model?

• Protons & Electrons

• Neutrons & Electrons

• Protons & Neutrons

• Protons only

Answer explanation

In Bohr's model, the nucleus consists of protons and neutrons. Protons are positively charged, while neutrons are neutral, together forming the core of the atom. Electrons orbit around the nucleus, not in it.