How many pairs of electrons are shared between the carbon-nitrogen bond in isocyanic acid

Acompound contains c, h, and o atoms. when 1.130 g of the compound is burned in oxygen, 1.064 g co2 and 0.3631 g h2o are produced. what is the empirical formula of this compound?

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom