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If a tube of hydrogen gas is placed above a test tube of air why would the tube of air give a positive test for hydrogen after a few seconds?
the hydrogen would likely begin bonding with the oxygen in the test tube, and become heavier. As this product falls out, it would pull more hydrogen to the end of the tube, putting more hydrogen in contact with the oxygen, much the same way as an oil lamp pulls the oil fumes from the base of the lamp to the flame.
What else can I help you with?
Why is hydrogen (H) placed with elements in Group 1A?
Properties of Hydrogen. Hydrogen is a nonmetal and is placed above group in the Periodic Table because it has ns1 electron configuration like the alkali metals.
What is the correct placement of hydrogen in the periodic table?
It is placed in group 1, period 1 on the modern periodic table
Why hydrogen is placed above alkali metals and not above non-metals in Modern Periodic Table?
It is much more common for hydrogen to lose an electron and become H+ than it is for it to become H- (like a halogen would), as in a hydride. Because it is possible for either behavior, though, some periodic tables DO show hydrogen in group 17. Some show it in group 1. Some show both, and some show hydrogen sitting in the middle by itself. It's a tricky one.
Why is hydrogen placed in the same group a alkali metals?
Although hydrogen is written above the alkali metals on the periodic table, it is not an alkali metal. It is only placed in that location because it has 1 electron in its outermost s orbital, like the alkali metals. Some tables put hydrogen all by itself above the rest of the table in the middle, with lines running from it diagonally down to both lithium and fluorine, to indicate its ability to either accept or donate a single electron to achieve a filled outer shell. However, it doesn't really belong with the alkali metals or with the halogens.
What part of a water molecule is positive?
Picture the water molecule as a mickey mouse hat. (This from another post, and a big thanks to that author for the visual.) The two "ears" are the hydrogen atoms, and the bigger round "hat" part is the oxygen atom. The hydrogen atoms will (mostly) have their electrons between themselves and the oxygen atom. That leaves the hydrogen nuclei (each a proton, and rarely a neutron or, even rarer, two) sticking out in space exposing their positive backsides. The oxygen atom will be a touch negative, and that is the end with the minus charge. Picturing the mickey mouse hat on an individual standing in front of the observer, the positive end of the molecule would be above and between the ears, and the negative end of the molecule would be at the hat-wearer's chin.
Why is hydrogen (H) placed with elements in Group 1A?
Properties of Hydrogen. Hydrogen is a nonmetal and is placed above group in the Periodic Table because it has ns1 electron configuration like the alkali metals.
Why hydrogen is placed above alkali metals and not above non metals in modern periodic table?
The electron configuration of hydrogen is similar with that of alkali metals.
Where are the positive rational number placed on a horizontal number line?
above 0
If an inverted tube containing air is placed above a test tube of hydrogen why would the tube of air give a positive test for hydrogen after a few minutes?
This would happen because of the process of diffusion. Hydrogen molecules would move from the hydrogen test tube where they are highly concentrated to the air test tube where their concentration is low.
What does hydrochloric acid mean in the periodic table?
Hydrochloric acid comprises of elements-hydrogen and chlorine. Hydrogen is placed above in group-1 and chlorine in group-17
What is the correct placement of hydrogen in the periodic table?
It is placed in group 1, period 1 on the modern periodic table
Why there is hydrogen bonding in water but not in hydro cloric acid although both have hydrogen?
FONFlorineOxygenNitrogenThe hydrogen must be bonded to one of these highly electronegative atoms to participate in hydrogen bonding.HClChlorine is not of this group shown above. Do you know why?
Where did Arctic Circle placed above or down?
above
Why Cu does not liberate H2 gas from dilH2So4?
Copper (Cu) is below hydrogen (H) in the activity series of metals, which means it is less reactive than hydrogen. As a result, when copper is placed in dilute sulfuric acid (H2SO4), it is unable to displace hydrogen from the acid to liberate H2 gas. Only metals above hydrogen in the activity series can displace hydrogen from acids to form hydrogen gas.
Why hydrogen is placed above alkali metals and not above non-metals in Modern Periodic Table?
It is much more common for hydrogen to lose an electron and become H+ than it is for it to become H- (like a halogen would), as in a hydride. Because it is possible for either behavior, though, some periodic tables DO show hydrogen in group 17. Some show it in group 1. Some show both, and some show hydrogen sitting in the middle by itself. It's a tricky one.
According to the activity series which will nickel react with?
According to the activity series, nickel will react with metals that are placed below it in the series. This means that nickel will react with metals such as silver, copper, and gold but not with metals placed above it like hydrogen, magnesium, or zinc.
What is the duration of Wings from Above?
The duration of Wings from Above is 60.0 seconds.
