What element has 2 protons, 2 neutrons and 2 electrons.
what element has 3 protons, 3 neutrons and 3 electrons.
what element has 11 protons, 11 neutrons and 11 electrons.

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer

Which sound characteristic is not affected by the relative motion of an object

What is the coefficient of kinetic friction μk between the block and the tabletop?