Elements 1 - 20

What is atomic mass of Argon

• 36

• Element not in 1 - 20

• 40

• 38

guess the element with electronic configuration: 2,8,8,1

• Potassium

• Calcium

• Argon

• Water

Tags

NGSS.HS-PS1-1

How many protons and neutrons are present in carbon

• It is not an element, it’s when a ‘car burns’

• 6 protons , 6 neutrons

• 6 protons , 12 neutrons

• Doesn’t have neutrons

• None of the above

Tags

NGSS.MS-PS1-1

What is symbol of potassium

• Ka

• P

• Po

• K

• Pt

How many electrons are there in chlorine

• As many as its protons

• As many as nucleus

• As many as neutron

• 18

What is a atomic number

• No.of atoms

• No.of hydrogen atoms

• A number given to a element

• Nothing but number of atoms in the nucleus in atom

Calcium is in 1 -20 elements and falls in group 3

• True

• False

Tags

NGSS.HS-PS1-1

Which two elements belong to group 0

• Neon

  and fluorine

• Argon

  and neon

• Chlorine

  and fluorine

• fluorine

  and neon

What is atomic mass

• Mass of atom

• Mass of weight

• Mass of atomic

  number

• Mass of protons

Tags

NGSS.HS-PS1-7

What is symbol of nitrogen

• N

• Ne

• Ni

• Na