Hydrogen makes up about 1% of the earth’s crust. It is found free in very small amounts in the atmosphere and also makes up one ninth by mass of water and is an important constituent of all acids and alkalis.
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action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /usr/www/users/mywaecf/KEYPOINT/wp-includes/functions.php on line 6121Hydrogen makes up about 1% of the earth’s crust. It is found free in very small amounts in the atmosphere and also makes up one ninth by mass of water and is an important constituent of all acids and alkalis.