Bohr and Lewis models

Imagine you are a scientist studying the periodic table in your lab. In this scenario, what would 'Groups' refer to?

• the horizontal rows you see on the periodic table

• the vertical columns you see on the periodic table

Trace pic according to direction to draw a Bohr model of given element.

1] write in P# & N# in nucleus

2] color VE shell green write e over the VE & color the rest of electrons blue

3]write the # of VE in Top right hand corner VE=?_

Answer explanation

• #1) It Weighs One-Third Less Than Steel. ...

• #2) It Doesn't Rust. ...

• #3) It's the World's Most Abundant Metal. ...

• #4) It's Recyclable. ...

• #5) It Was Used Thousands of Years Ago. ...

• #6) It's Resistant to Heat. ...

• #7) It's Ductile.

Tags

NGSS.MS-PS1-1

Imagine you are looking at a periodic table. In this context, the Periods are represented as

• Horizontal rows

• Vertical columns

Imagine you are looking at an atom as if it were a solar system. The nucleus is the sun and the electrons are the planets. What would you call the electrons in the outermost orbit?

• Electrons in the first energy shell

• Electrons in the second energy shell

• Electrons in the outer shell

• Total number of electrons

Imagine you are studying the structure of an atom. The innermost energy level of this atom can hold a maximum of how many electrons?

• 1

• 2

• 6

• 8

You are in a chemistry lab and you come across an unknown element. The element is colorless, odorless, and it glows red when electricity is passed through it. Which element is this?

• Nickel

• Neon

• Sodium

• Nitrogen

Tags

NGSS.MS-PS1-1

You are a scientist working in a lab and you come across an element with atomic number 4. What is this element?

• Beryllium (atomic #4)

• Boron (atomic #5)

• Carbon (atomic #6)

• Nitrogen (atomic #7)

Tags

NGSS.MS-PS1-1

John is studying chemistry and he comes across an element in the periodic table. He wants to know how many valence electrons does this element have?

• 2

• 3

• 4

• 5

Tags

NGSS.MS-PS1-1

Draw the bohr model for silicon -

_{can trace}

Answer explanation

Tags

NGSS.MS-PS1-1

John is studying chemistry and he came across an element. He found that the element has how many valence electrons?

• 2

• 4

• 6

• 8

Tags

NGSS.MS-PS1-1