How do these molecular orbitals differ from those obtained from linear combinations of the 2py atomic orbitals? (The 2p, orbitals are also oriented perpendicular not only to the bonding axis but also to the 2pz orbitals.) Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Reset Help 90° The difference between the 2p, and the 2pz atomic orbitals is a rotation about the 180° internuclear axis. Consequently, the difference between the resulting MOs is a 45° rotation about the internuclear axis. The energies and the names of the bonding and antibonding MOs obtained from the combination of the 2py atomic orbitals are those obtained from the combination of the 2pz atomic orbitals.

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.