What are the reactants and products? What does the arrow stand for?
2Na+2H20 →2NaOH+H2

Explanation:

What is the reducing agent in the reaction 2N a + 2H 2O → 2N aOH + H 2? Sodium metal. You're dealing with a redox reaction in which sodium metal, Na, is being oxidized to sodium cations, Na+, and hydrogen is being reduced to hydrogen gas, H2.

i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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