Answer:
The two atoms will contribute and share two electrons each in a double covalent bond, to form a molecule of the element.
Explanation:
Following the rule which says that an octet structure in the valence electrons shell of an atom, when two atoms of an element with the electronic configuration 1s²2s²2p⁴ comeclose to each other, they will share there electrons in covalent bonding to form a molecule, and thus attain stability by achieving an octet structure.
An atom of the element with electronic configuration 1s²2s²2p⁴, has 6 valence electrons and thus, needs two more electrons in order to achieve an octet. This is achieved by sharing two electrons with another atom of the same element which contributes two electrons as well to form a double covalent bond and a molecule of the element. Therefore, each atom would then have an octet structure in their valence shells.
Answer:
The urine may turn purple or remain colourless
Explanation:
Adding sodium hydroxide (NaOH) and hydrated copper(II) sulfate to urine in a test tube is a test for proteins in urine.
This test depends on the ability of sodium hydroxide (NaOH) and hydrated copper(II) sulfate to form purple-coloured cordination complexes with peptides. The appearance of this purple colour is a positive test for protiens in urine.
Hence, when a few drops of a mixture of sodium hydroxide and copper(ii) tetraoxosulphate (vi) solution added to a sample of urine test in a test tube, the solution may turn purple indicating the presence of proteins in urine or remain colourless indicating the absence of proteins in urine.
Tsunamis are caused by seismic waves
