Which of the following elements has the lowest electronegativity?

Ca

Sr

Fr

Why does a cool ocean have more thermal energy than a hot bowl of soup?

Unbalanced forces can cause an object change its motion in three ways. What are they?

How does the lone pair distort the molecular shape

Oh no! The thermometer punctured a hole in the bottom of the coffee cup, and water is spilling out. Check all actions you would take. Throw the broken pieces away. Use the punctured cup as the outside cup, not the inside cup.

How many protons are in one atom of 37Ar

What is the molar mass of the following substance : Cs2CO3

What does the velocity of a wave describe

Sulfur (S) has 16 protons and 16 neutrons. How many electron shells does an element of sulfur have?

Which one of the following statements about orbital energies is incorrect? A) The energy of a given orbital increases as the nuclear charge Z increases. B) In many-electron atoms the energy of an orbital depends on both n and l.

When solid lead (II) sulfide ore burns in oxygen gas, the products are solid lead (II) oxide and sulfur dioxide gas.? A. write the balanced equation B. how many grams of oxygen are required to react with 29.9 grams of lead II sulfide? C.